[31bb2e1] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // iocall.cfa -- |
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| 8 | // |
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| 9 | // Author : Thierry Delisle |
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| 10 | // Created On : Wed Jul 1 14:51:00 2020 |
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| 11 | // Last Modified By : |
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| 12 | // Last Modified On : |
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| 13 | // Update Count : |
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| 14 | // |
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| 15 | |
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[3e2b9c9] | 16 | #define __cforall_thread__ |
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| 17 | |
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[5877b3e] | 18 | #include "bits/defs.hfa" |
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[1a39a5a] | 19 | #include "kernel.hfa" |
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[5877b3e] | 20 | |
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[4b84e35] | 21 | //============================================================================================= |
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| 22 | // I/O uring backend |
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| 23 | //============================================================================================= |
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| 24 | |
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[5751a56] | 25 | #if defined(CFA_HAVE_LINUX_IO_URING_H) |
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[3e2b9c9] | 26 | #include <assert.h> |
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[31bb2e1] | 27 | #include <stdint.h> |
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[f00b26d4] | 28 | #include <errno.h> |
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[31bb2e1] | 29 | #include <linux/io_uring.h> |
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| 30 | |
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[3e2b9c9] | 31 | #include "kernel/fwd.hfa" |
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| 32 | #include "io/types.hfa" |
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[31bb2e1] | 33 | |
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[4998155] | 34 | extern [* struct io_uring_sqe, __u32] __submit_alloc( struct __io_data & ring, __u64 data ); |
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| 35 | extern void __submit( struct io_context * ctx, __u32 idx ) __attribute__((nonnull (1))); |
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[31bb2e1] | 36 | |
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[4998155] | 37 | static inline void ?{}(struct io_uring_sqe & this, __u8 opcode, int fd) { |
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[4b84e35] | 38 | this.opcode = opcode; |
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| 39 | #if !defined(IOSQE_ASYNC) |
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| 40 | this.flags = 0; |
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| 41 | #else |
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| 42 | this.flags = IOSQE_ASYNC; |
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| 43 | #endif |
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| 44 | this.ioprio = 0; |
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| 45 | this.fd = fd; |
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| 46 | this.off = 0; |
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| 47 | this.addr = 0; |
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| 48 | this.len = 0; |
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| 49 | this.rw_flags = 0; |
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| 50 | this.__pad2[0] = this.__pad2[1] = this.__pad2[2] = 0; |
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| 51 | } |
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| 52 | |
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[4998155] | 53 | static inline void ?{}(struct io_uring_sqe & this, __u8 opcode, int fd, void * addr, __u32 len, __u64 off ) { |
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[4b84e35] | 54 | (this){ opcode, fd }; |
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| 55 | this.off = off; |
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[4998155] | 56 | this.addr = (__u64)(uintptr_t)addr; |
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[4b84e35] | 57 | this.len = len; |
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| 58 | } |
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[31bb2e1] | 59 | |
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[3e2b9c9] | 60 | static inline io_context * __get_io_context( void ) { |
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| 61 | cluster * cltr = active_cluster(); |
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| 62 | /* paranoid */ verifyf( cltr, "No active cluster for io operation\n"); |
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| 63 | assertf( cltr->io.cnt > 0, "Cluster %p has no default io contexts and no context was specified\n", cltr ); |
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| 64 | /* paranoid */ verifyf( cltr->io.ctxs, "default io contexts for cluster %p are missing\n", cltr); |
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| 65 | return &cltr->io.ctxs[ __tls_rand() % cltr->io.cnt ]; |
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| 66 | } |
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[f00b26d4] | 67 | |
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| 68 | |
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[97c3159] | 69 | #if defined(CFA_HAVE_IOSQE_FIXED_FILE) && defined(CFA_HAVE_IOSQE_IO_DRAIN) && defined(CFA_HAVE_IOSQE_ASYNC) |
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[f00b26d4] | 70 | #define REGULAR_FLAGS (IOSQE_FIXED_FILE | IOSQE_IO_DRAIN | IOSQE_ASYNC) |
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| 71 | #elif defined(CFA_HAVE_IOSQE_FIXED_FILE) && defined(CFA_HAVE_IOSQE_ASYNC) |
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| 72 | #define REGULAR_FLAGS (IOSQE_FIXED_FILE | IOSQE_ASYNC) |
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[97c3159] | 73 | #elif defined(CFA_HAVE_IOSQE_FIXED_FILE) && defined(CFA_HAVE_IOSQE_IO_DRAIN) |
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[f00b26d4] | 74 | #define REGULAR_FLAGS (IOSQE_FIXED_FILE | IOSQE_IO_DRAIN) |
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[97c3159] | 75 | #elif defined(CFA_HAVE_IOSQE_IO_DRAIN) && defined(CFA_HAVE_IOSQE_ASYNC) |
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[f00b26d4] | 76 | #define REGULAR_FLAGS (IOSQE_IO_DRAIN | IOSQE_ASYNC) |
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| 77 | #elif defined(CFA_HAVE_IOSQE_FIXED_FILE) |
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| 78 | #define REGULAR_FLAGS (IOSQE_FIXED_FILE) |
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[97c3159] | 79 | #elif defined(CFA_HAVE_IOSQE_IO_DRAIN) |
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[f00b26d4] | 80 | #define REGULAR_FLAGS (IOSQE_IO_DRAIN) |
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[97c3159] | 81 | #elif defined(CFA_HAVE_IOSQE_ASYNC) |
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[f00b26d4] | 82 | #define REGULAR_FLAGS (IOSQE_ASYNC) |
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| 83 | #else |
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| 84 | #define REGULAR_FLAGS (0) |
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| 85 | #endif |
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| 86 | |
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| 87 | #if defined(CFA_HAVE_IOSQE_IO_LINK) && defined(CFA_HAVE_IOSQE_IO_HARDLINK) |
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| 88 | #define LINK_FLAGS (IOSQE_IO_LINK | IOSQE_IO_HARDLINK) |
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| 89 | #elif defined(CFA_HAVE_IOSQE_IO_LINK) |
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| 90 | #define LINK_FLAGS (IOSQE_IO_LINK) |
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| 91 | #elif defined(CFA_HAVE_IOSQE_IO_HARDLINK) |
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| 92 | #define LINK_FLAGS (IOSQE_IO_HARDLINK) |
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| 93 | #else |
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| 94 | #define LINK_FLAGS (0) |
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| 95 | #endif |
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| 96 | |
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| 97 | #if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED) |
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| 98 | #define SPLICE_FLAGS (SPLICE_F_FD_IN_FIXED) |
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| 99 | #else |
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| 100 | #define SPLICE_FLAGS (0) |
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| 101 | #endif |
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| 102 | |
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[31bb2e1] | 103 | #define __submit_prelude \ |
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[f00b26d4] | 104 | if( 0 != (submit_flags & LINK_FLAGS) ) { errno = ENOTSUP; return -1; } \ |
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| 105 | (void)timeout; (void)cancellation; \ |
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| 106 | if( !context ) context = __get_io_context(); \ |
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[4998155] | 107 | __io_user_data_t data = { 0 }; \ |
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[f00b26d4] | 108 | struct __io_data & ring = *context->thrd.ring; \ |
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[31bb2e1] | 109 | struct io_uring_sqe * sqe; \ |
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[4998155] | 110 | __u32 idx; \ |
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| 111 | __u8 sflags = REGULAR_FLAGS & submit_flags; \ |
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| 112 | [sqe, idx] = __submit_alloc( ring, (__u64)(uintptr_t)&data ); \ |
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[2606a03] | 113 | sqe->flags = sflags; |
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[31bb2e1] | 114 | |
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| 115 | #define __submit_wait \ |
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| 116 | /*__cfaabi_bits_print_safe( STDERR_FILENO, "Preparing user data %p for %p\n", &data, data.thrd );*/ \ |
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[4998155] | 117 | verify( sqe->user_data == (__u64)(uintptr_t)&data ); \ |
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[f00b26d4] | 118 | __submit( context, idx ); \ |
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[4998155] | 119 | wait( data.sem ); \ |
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[f00b26d4] | 120 | if( data.result < 0 ) { \ |
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| 121 | errno = -data.result; \ |
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| 122 | return -1; \ |
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| 123 | } \ |
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[31bb2e1] | 124 | return data.result; |
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[4b84e35] | 125 | #endif |
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[31bb2e1] | 126 | |
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[4b84e35] | 127 | //============================================================================================= |
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| 128 | // I/O Forwards |
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| 129 | //============================================================================================= |
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[f00b26d4] | 130 | #include <time.hfa> |
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[31bb2e1] | 131 | |
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[4b84e35] | 132 | // Some forward declarations |
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[cf48a14] | 133 | #include <errno.h> |
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[4b84e35] | 134 | #include <unistd.h> |
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| 135 | |
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| 136 | extern "C" { |
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| 137 | #include <sys/types.h> |
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| 138 | #include <sys/socket.h> |
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| 139 | #include <sys/syscall.h> |
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| 140 | |
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| 141 | #if defined(HAVE_PREADV2) |
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| 142 | struct iovec; |
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| 143 | extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags); |
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| 144 | #endif |
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| 145 | #if defined(HAVE_PWRITEV2) |
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| 146 | struct iovec; |
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| 147 | extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags); |
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| 148 | #endif |
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| 149 | |
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| 150 | extern int fsync(int fd); |
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[4998155] | 151 | |
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[133a161] | 152 | #if __OFF_T_MATCHES_OFF64_T |
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| 153 | typedef __off64_t off_t; |
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| 154 | #else |
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| 155 | typedef __off_t off_t; |
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| 156 | #endif |
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[4998155] | 157 | typedef __off64_t off64_t; |
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| 158 | extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags); |
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[4b84e35] | 159 | |
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| 160 | struct msghdr; |
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| 161 | struct sockaddr; |
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| 162 | extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags); |
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| 163 | extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags); |
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| 164 | extern ssize_t send(int sockfd, const void *buf, size_t len, int flags); |
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| 165 | extern ssize_t recv(int sockfd, void *buf, size_t len, int flags); |
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| 166 | extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags); |
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| 167 | extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen); |
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| 168 | |
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[4998155] | 169 | extern int fallocate(int fd, int mode, off_t offset, off_t len); |
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| 170 | extern int posix_fadvise(int fd, off_t offset, off_t len, int advice); |
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[4b84e35] | 171 | extern int madvise(void *addr, size_t length, int advice); |
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| 172 | |
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| 173 | extern int openat(int dirfd, const char *pathname, int flags, mode_t mode); |
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| 174 | extern int close(int fd); |
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| 175 | |
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| 176 | extern ssize_t read (int fd, void *buf, size_t count); |
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[0a92c78] | 177 | |
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| 178 | extern ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out, size_t len, unsigned int flags); |
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| 179 | extern ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags); |
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[4b84e35] | 180 | } |
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[31bb2e1] | 181 | |
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[4b84e35] | 182 | //============================================================================================= |
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| 183 | // I/O Interface |
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| 184 | //============================================================================================= |
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[31bb2e1] | 185 | |
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[4b84e35] | 186 | //----------------------------------------------------------------------------- |
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| 187 | // Asynchronous operations |
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| 188 | #if defined(HAVE_PREADV2) |
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[f00b26d4] | 189 | ssize_t cfa_preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 190 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_READV) |
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[20ab637] | 191 | return preadv2(fd, iov, iovcnt, offset, flags); |
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| 192 | #else |
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| 193 | __submit_prelude |
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| 194 | |
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[2606a03] | 195 | sqe->opcode = IORING_OP_READV; |
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| 196 | sqe->ioprio = 0; |
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| 197 | sqe->fd = fd; |
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| 198 | sqe->off = offset; |
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[4998155] | 199 | sqe->addr = (__u64)iov; |
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[2606a03] | 200 | sqe->len = iovcnt; |
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| 201 | sqe->rw_flags = 0; |
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| 202 | sqe->__pad2[0] = sqe->__pad2[1] = sqe->__pad2[2] = 0; |
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[20ab637] | 203 | |
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| 204 | __submit_wait |
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| 205 | #endif |
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| 206 | } |
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[4b84e35] | 207 | #endif |
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[31bb2e1] | 208 | |
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[4b84e35] | 209 | #if defined(HAVE_PWRITEV2) |
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[f00b26d4] | 210 | ssize_t cfa_pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 211 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_WRITEV) |
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[4b84e35] | 212 | return pwritev2(fd, iov, iovcnt, offset, flags); |
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[31bb2e1] | 213 | #else |
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| 214 | __submit_prelude |
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| 215 | |
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[4998155] | 216 | sqe->opcode = IORING_OP_WRITEV; |
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| 217 | sqe->ioprio = 0; |
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| 218 | sqe->fd = fd; |
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| 219 | sqe->off = offset; |
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| 220 | sqe->addr = (__u64)iov; |
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| 221 | sqe->len = iovcnt; |
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| 222 | sqe->rw_flags = 0; |
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| 223 | sqe->__pad2[0] = sqe->__pad2[1] = sqe->__pad2[2] = 0; |
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[31bb2e1] | 224 | |
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| 225 | __submit_wait |
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| 226 | #endif |
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| 227 | } |
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[4b84e35] | 228 | #endif |
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[31bb2e1] | 229 | |
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[f00b26d4] | 230 | int cfa_fsync(int fd, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 231 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_FSYNC) |
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[4b84e35] | 232 | return fsync(fd); |
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| 233 | #else |
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| 234 | __submit_prelude |
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[31bb2e1] | 235 | |
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[4998155] | 236 | sqe->opcode = IORING_OP_FSYNC; |
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| 237 | sqe->ioprio = 0; |
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| 238 | sqe->fd = fd; |
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| 239 | sqe->off = 0; |
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| 240 | sqe->addr = 0; |
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| 241 | sqe->len = 0; |
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| 242 | sqe->rw_flags = 0; |
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| 243 | sqe->__pad2[0] = sqe->__pad2[1] = sqe->__pad2[2] = 0; |
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[31bb2e1] | 244 | |
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[4b84e35] | 245 | __submit_wait |
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| 246 | #endif |
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| 247 | } |
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[31bb2e1] | 248 | |
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[4998155] | 249 | int cfa_sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 250 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_SYNC_FILE_RANGE) |
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[4b84e35] | 251 | return sync_file_range(fd, offset, nbytes, flags); |
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| 252 | #else |
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| 253 | __submit_prelude |
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[31bb2e1] | 254 | |
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[4b84e35] | 255 | (*sqe){ IORING_OP_SYNC_FILE_RANGE, fd }; |
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| 256 | sqe->off = offset; |
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| 257 | sqe->len = nbytes; |
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| 258 | sqe->sync_range_flags = flags; |
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[31bb2e1] | 259 | |
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[4b84e35] | 260 | __submit_wait |
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| 261 | #endif |
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| 262 | } |
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[31bb2e1] | 263 | |
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| 264 | |
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[f00b26d4] | 265 | ssize_t cfa_sendmsg(int sockfd, const struct msghdr *msg, int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 266 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_SENDMSG) |
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[4b84e35] | 267 | return sendmsg(sockfd, msg, flags); |
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| 268 | #else |
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| 269 | __submit_prelude |
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[31bb2e1] | 270 | |
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[4b84e35] | 271 | (*sqe){ IORING_OP_SENDMSG, sockfd, msg, 1, 0 }; |
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| 272 | sqe->msg_flags = flags; |
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[31bb2e1] | 273 | |
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[4b84e35] | 274 | __submit_wait |
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| 275 | #endif |
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| 276 | } |
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[31bb2e1] | 277 | |
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[f00b26d4] | 278 | ssize_t cfa_recvmsg(int sockfd, struct msghdr *msg, int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 279 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_RECVMSG) |
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[4b84e35] | 280 | return recvmsg(sockfd, msg, flags); |
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| 281 | #else |
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| 282 | __submit_prelude |
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[31bb2e1] | 283 | |
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[4b84e35] | 284 | (*sqe){ IORING_OP_RECVMSG, sockfd, msg, 1, 0 }; |
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| 285 | sqe->msg_flags = flags; |
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[31bb2e1] | 286 | |
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[4b84e35] | 287 | __submit_wait |
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| 288 | #endif |
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| 289 | } |
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[31bb2e1] | 290 | |
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[f00b26d4] | 291 | ssize_t cfa_send(int sockfd, const void *buf, size_t len, int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 292 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_SEND) |
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[4b84e35] | 293 | return send( sockfd, buf, len, flags ); |
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| 294 | #else |
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| 295 | __submit_prelude |
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[31bb2e1] | 296 | |
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[4b84e35] | 297 | (*sqe){ IORING_OP_SEND, sockfd }; |
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[4998155] | 298 | sqe->addr = (__u64)buf; |
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[4b84e35] | 299 | sqe->len = len; |
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| 300 | sqe->msg_flags = flags; |
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[31bb2e1] | 301 | |
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[4b84e35] | 302 | __submit_wait |
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| 303 | #endif |
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| 304 | } |
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[31bb2e1] | 305 | |
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[f00b26d4] | 306 | ssize_t cfa_recv(int sockfd, void *buf, size_t len, int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 307 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_RECV) |
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[4b84e35] | 308 | return recv( sockfd, buf, len, flags ); |
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| 309 | #else |
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| 310 | __submit_prelude |
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[31bb2e1] | 311 | |
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[4b84e35] | 312 | (*sqe){ IORING_OP_RECV, sockfd }; |
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[4998155] | 313 | sqe->addr = (__u64)buf; |
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[4b84e35] | 314 | sqe->len = len; |
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| 315 | sqe->msg_flags = flags; |
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[31bb2e1] | 316 | |
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[4b84e35] | 317 | __submit_wait |
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| 318 | #endif |
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| 319 | } |
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[31bb2e1] | 320 | |
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[f00b26d4] | 321 | int cfa_accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 322 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_ACCEPT) |
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[4b84e35] | 323 | return accept4( sockfd, addr, addrlen, flags ); |
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| 324 | #else |
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| 325 | __submit_prelude |
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[31bb2e1] | 326 | |
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[4b84e35] | 327 | (*sqe){ IORING_OP_ACCEPT, sockfd }; |
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[4998155] | 328 | sqe->addr = (__u64)addr; |
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| 329 | sqe->addr2 = (__u64)addrlen; |
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[4b84e35] | 330 | sqe->accept_flags = flags; |
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[31bb2e1] | 331 | |
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[4b84e35] | 332 | __submit_wait |
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| 333 | #endif |
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| 334 | } |
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[31bb2e1] | 335 | |
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[f00b26d4] | 336 | int cfa_connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 337 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_CONNECT) |
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[4b84e35] | 338 | return connect( sockfd, addr, addrlen ); |
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| 339 | #else |
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| 340 | __submit_prelude |
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[31bb2e1] | 341 | |
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[4b84e35] | 342 | (*sqe){ IORING_OP_CONNECT, sockfd }; |
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[4998155] | 343 | sqe->addr = (__u64)addr; |
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| 344 | sqe->off = (__u64)addrlen; |
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[31bb2e1] | 345 | |
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[4b84e35] | 346 | __submit_wait |
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| 347 | #endif |
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| 348 | } |
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[31bb2e1] | 349 | |
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[4998155] | 350 | int cfa_fallocate(int fd, int mode, off_t offset, off_t len, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 351 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_FALLOCATE) |
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[4b84e35] | 352 | return fallocate( fd, mode, offset, len ); |
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| 353 | #else |
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| 354 | __submit_prelude |
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[31bb2e1] | 355 | |
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[85eafc5] | 356 | #warning FALLOCATE documentation for linux 5.7 is incorrect, and does not handle mode |
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[3f850d7] | 357 | |
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[4b84e35] | 358 | (*sqe){ IORING_OP_FALLOCATE, fd }; |
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| 359 | sqe->off = offset; |
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[3f850d7] | 360 | sqe->len = mode; |
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| 361 | sqe->addr = len; |
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[31bb2e1] | 362 | |
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[4b84e35] | 363 | __submit_wait |
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| 364 | #endif |
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| 365 | } |
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[31bb2e1] | 366 | |
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[4998155] | 367 | int cfa_fadvise(int fd, off_t offset, off_t len, int advice, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 368 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_FADVISE) |
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[4b84e35] | 369 | return posix_fadvise( fd, offset, len, advice ); |
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| 370 | #else |
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| 371 | __submit_prelude |
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[31bb2e1] | 372 | |
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[4b84e35] | 373 | (*sqe){ IORING_OP_FADVISE, fd }; |
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[4998155] | 374 | sqe->off = (__u64)offset; |
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[3f850d7] | 375 | sqe->len = len; |
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[4b84e35] | 376 | sqe->fadvise_advice = advice; |
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[31bb2e1] | 377 | |
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[4b84e35] | 378 | __submit_wait |
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| 379 | #endif |
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| 380 | } |
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[31bb2e1] | 381 | |
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[f00b26d4] | 382 | int cfa_madvise(void *addr, size_t length, int advice, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 383 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_MADVISE) |
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[4b84e35] | 384 | return madvise( addr, length, advice ); |
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| 385 | #else |
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| 386 | __submit_prelude |
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[31bb2e1] | 387 | |
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[4b84e35] | 388 | (*sqe){ IORING_OP_MADVISE, 0 }; |
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[4998155] | 389 | sqe->addr = (__u64)addr; |
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[4b84e35] | 390 | sqe->len = length; |
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| 391 | sqe->fadvise_advice = advice; |
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[31bb2e1] | 392 | |
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[4b84e35] | 393 | __submit_wait |
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| 394 | #endif |
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| 395 | } |
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[31bb2e1] | 396 | |
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[f00b26d4] | 397 | int cfa_openat(int dirfd, const char *pathname, int flags, mode_t mode, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 398 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_OPENAT) |
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[4b84e35] | 399 | return openat( dirfd, pathname, flags, mode ); |
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| 400 | #else |
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| 401 | __submit_prelude |
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[31bb2e1] | 402 | |
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[4b84e35] | 403 | (*sqe){ IORING_OP_OPENAT, dirfd }; |
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[4998155] | 404 | sqe->addr = (__u64)pathname; |
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[4b84e35] | 405 | sqe->open_flags = flags; |
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[3f850d7] | 406 | sqe->len = mode; |
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[31bb2e1] | 407 | |
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[4b84e35] | 408 | __submit_wait |
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| 409 | #endif |
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| 410 | } |
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[31bb2e1] | 411 | |
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[f00b26d4] | 412 | int cfa_close(int fd, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 413 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_CLOSE) |
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[4b84e35] | 414 | return close( fd ); |
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| 415 | #else |
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| 416 | __submit_prelude |
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[31bb2e1] | 417 | |
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[4b84e35] | 418 | (*sqe){ IORING_OP_CLOSE, fd }; |
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| 419 | |
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| 420 | __submit_wait |
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| 421 | #endif |
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| 422 | } |
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[31bb2e1] | 423 | |
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[efc171d1] | 424 | // Forward declare in case it is not supported |
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| 425 | struct statx; |
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[f00b26d4] | 426 | int cfa_statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 427 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_STATX) |
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[5db836e] | 428 | #if defined(__NR_statx) |
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| 429 | return syscall( __NR_statx, dirfd, pathname, flags, mask, statxbuf ); |
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| 430 | #else |
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| 431 | errno = ENOTSUP; |
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| 432 | return -1; |
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| 433 | #endif |
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[519f11c] | 434 | #else |
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| 435 | __submit_prelude |
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| 436 | |
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[4998155] | 437 | (*sqe){ IORING_OP_STATX, dirfd, pathname, mask, (__u64)statxbuf }; |
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[f00b26d4] | 438 | sqe->statx_flags = flags; |
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[519f11c] | 439 | |
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| 440 | __submit_wait |
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| 441 | #endif |
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| 442 | } |
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| 443 | |
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[f00b26d4] | 444 | ssize_t cfa_read(int fd, void *buf, size_t count, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 445 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_READ) |
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[4b84e35] | 446 | return read( fd, buf, count ); |
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| 447 | #else |
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| 448 | __submit_prelude |
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| 449 | |
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| 450 | (*sqe){ IORING_OP_READ, fd, buf, count, 0 }; |
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| 451 | |
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| 452 | __submit_wait |
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| 453 | #endif |
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| 454 | } |
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| 455 | |
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[f00b26d4] | 456 | ssize_t cfa_write(int fd, void *buf, size_t count, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 457 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_WRITE) |
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[4b84e35] | 458 | return read( fd, buf, count ); |
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| 459 | #else |
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| 460 | __submit_prelude |
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| 461 | |
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| 462 | (*sqe){ IORING_OP_WRITE, fd, buf, count, 0 }; |
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| 463 | |
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| 464 | __submit_wait |
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| 465 | #endif |
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| 466 | } |
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| 467 | |
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[f00b26d4] | 468 | ssize_t cfa_splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out, size_t len, unsigned int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 469 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_SPLICE) |
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| 470 | return splice( fd_in, off_in, fd_out, off_out, len, flags ); |
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| 471 | #else |
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| 472 | __submit_prelude |
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| 473 | |
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[3f850d7] | 474 | (*sqe){ IORING_OP_SPLICE, fd_out }; |
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| 475 | if( off_out ) { |
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| 476 | sqe->off = *off_out; |
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| 477 | } |
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| 478 | else { |
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[4998155] | 479 | sqe->off = (__u64)-1; |
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[3f850d7] | 480 | } |
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| 481 | sqe->len = len; |
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[5751a56] | 482 | sqe->splice_fd_in = fd_in; |
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[3f850d7] | 483 | if( off_in ) { |
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| 484 | sqe->splice_off_in = *off_in; |
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| 485 | } |
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| 486 | else { |
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[4998155] | 487 | sqe->splice_off_in = (__u64)-1; |
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[3f850d7] | 488 | } |
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[f00b26d4] | 489 | sqe->splice_flags = flags | (SPLICE_FLAGS & submit_flags); |
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[5751a56] | 490 | |
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| 491 | __submit_wait |
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| 492 | #endif |
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| 493 | } |
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| 494 | |
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[f00b26d4] | 495 | ssize_t cfa_tee(int fd_in, int fd_out, size_t len, unsigned int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) { |
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[5751a56] | 496 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_TEE) |
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[0a92c78] | 497 | return tee( fd_in, fd_out, len, flags ); |
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| 498 | #else |
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| 499 | __submit_prelude |
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| 500 | |
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| 501 | (*sqe){ IORING_OP_TEE, fd_out, 0p, len, 0 }; |
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| 502 | sqe->splice_fd_in = fd_in; |
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[f00b26d4] | 503 | sqe->splice_flags = flags | (SPLICE_FLAGS & submit_flags); |
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[0a92c78] | 504 | |
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| 505 | __submit_wait |
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| 506 | #endif |
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| 507 | } |
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| 508 | |
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[4b84e35] | 509 | //----------------------------------------------------------------------------- |
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| 510 | // Check if a function is asynchronous |
---|
| 511 | |
---|
| 512 | // Macro magic to reduce the size of the following switch case |
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| 513 | #define IS_DEFINED_APPLY(f, ...) f(__VA_ARGS__) |
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| 514 | #define IS_DEFINED_SECOND(first, second, ...) second |
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| 515 | #define IS_DEFINED_TEST(expansion) _CFA_IO_FEATURE_##expansion |
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| 516 | #define IS_DEFINED(macro) IS_DEFINED_APPLY( IS_DEFINED_SECOND,IS_DEFINED_TEST(macro) false, true) |
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| 517 | |
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| 518 | bool has_user_level_blocking( fptr_t func ) { |
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[5751a56] | 519 | #if defined(CFA_HAVE_LINUX_IO_URING_H) |
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[4b84e35] | 520 | #if defined(HAVE_PREADV2) |
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| 521 | if( /*func == (fptr_t)preadv2 || */ |
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| 522 | func == (fptr_t)cfa_preadv2 ) |
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[5751a56] | 523 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_READV , |
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| 524 | return IS_DEFINED(CFA_HAVE_IORING_OP_READV); |
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[31bb2e1] | 525 | #endif |
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| 526 | |
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[4b84e35] | 527 | #if defined(HAVE_PWRITEV2) |
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| 528 | if( /*func == (fptr_t)pwritev2 || */ |
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| 529 | func == (fptr_t)cfa_pwritev2 ) |
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[5751a56] | 530 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_WRITEV , |
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| 531 | return IS_DEFINED(CFA_HAVE_IORING_OP_WRITEV); |
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[31bb2e1] | 532 | #endif |
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| 533 | |
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[4b84e35] | 534 | if( /*func == (fptr_t)fsync || */ |
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| 535 | func == (fptr_t)cfa_fsync ) |
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[5751a56] | 536 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_FSYNC , |
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| 537 | return IS_DEFINED(CFA_HAVE_IORING_OP_FSYNC); |
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[4b84e35] | 538 | |
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| 539 | if( /*func == (fptr_t)ync_file_range || */ |
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| 540 | func == (fptr_t)cfa_sync_file_range ) |
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[5751a56] | 541 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_SYNC_FILE_RANGE , |
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| 542 | return IS_DEFINED(CFA_HAVE_IORING_OP_SYNC_FILE_RANGE); |
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[4b84e35] | 543 | |
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| 544 | if( /*func == (fptr_t)sendmsg || */ |
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| 545 | func == (fptr_t)cfa_sendmsg ) |
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[5751a56] | 546 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_SENDMSG , |
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| 547 | return IS_DEFINED(CFA_HAVE_IORING_OP_SENDMSG); |
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[4b84e35] | 548 | |
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| 549 | if( /*func == (fptr_t)recvmsg || */ |
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| 550 | func == (fptr_t)cfa_recvmsg ) |
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[5751a56] | 551 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_RECVMSG , |
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| 552 | return IS_DEFINED(CFA_HAVE_IORING_OP_RECVMSG); |
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[4b84e35] | 553 | |
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| 554 | if( /*func == (fptr_t)send || */ |
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| 555 | func == (fptr_t)cfa_send ) |
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[5751a56] | 556 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_SEND , |
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| 557 | return IS_DEFINED(CFA_HAVE_IORING_OP_SEND); |
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[4b84e35] | 558 | |
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| 559 | if( /*func == (fptr_t)recv || */ |
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| 560 | func == (fptr_t)cfa_recv ) |
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[5751a56] | 561 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_RECV , |
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| 562 | return IS_DEFINED(CFA_HAVE_IORING_OP_RECV); |
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[4b84e35] | 563 | |
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| 564 | if( /*func == (fptr_t)accept4 || */ |
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| 565 | func == (fptr_t)cfa_accept4 ) |
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[5751a56] | 566 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_ACCEPT , |
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| 567 | return IS_DEFINED(CFA_HAVE_IORING_OP_ACCEPT); |
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[4b84e35] | 568 | |
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| 569 | if( /*func == (fptr_t)connect || */ |
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| 570 | func == (fptr_t)cfa_connect ) |
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[5751a56] | 571 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_CONNECT , |
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| 572 | return IS_DEFINED(CFA_HAVE_IORING_OP_CONNECT); |
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[4b84e35] | 573 | |
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| 574 | if( /*func == (fptr_t)fallocate || */ |
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| 575 | func == (fptr_t)cfa_fallocate ) |
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[5751a56] | 576 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_FALLOCATE , |
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| 577 | return IS_DEFINED(CFA_HAVE_IORING_OP_FALLOCATE); |
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[4b84e35] | 578 | |
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| 579 | if( /*func == (fptr_t)posix_fadvise || */ |
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| 580 | func == (fptr_t)cfa_fadvise ) |
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[5751a56] | 581 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_FADVISE , |
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| 582 | return IS_DEFINED(CFA_HAVE_IORING_OP_FADVISE); |
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[4b84e35] | 583 | |
---|
| 584 | if( /*func == (fptr_t)madvise || */ |
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| 585 | func == (fptr_t)cfa_madvise ) |
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[5751a56] | 586 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_MADVISE , |
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| 587 | return IS_DEFINED(CFA_HAVE_IORING_OP_MADVISE); |
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[4b84e35] | 588 | |
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| 589 | if( /*func == (fptr_t)openat || */ |
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| 590 | func == (fptr_t)cfa_openat ) |
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[5751a56] | 591 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_OPENAT , |
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| 592 | return IS_DEFINED(CFA_HAVE_IORING_OP_OPENAT); |
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[4b84e35] | 593 | |
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| 594 | if( /*func == (fptr_t)close || */ |
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| 595 | func == (fptr_t)cfa_close ) |
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[5751a56] | 596 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_CLOSE , |
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| 597 | return IS_DEFINED(CFA_HAVE_IORING_OP_CLOSE); |
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[4b84e35] | 598 | |
---|
| 599 | if( /*func == (fptr_t)read || */ |
---|
| 600 | func == (fptr_t)cfa_read ) |
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[5751a56] | 601 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_READ , |
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| 602 | return IS_DEFINED(CFA_HAVE_IORING_OP_READ); |
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[4b84e35] | 603 | |
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| 604 | if( /*func == (fptr_t)write || */ |
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| 605 | func == (fptr_t)cfa_write ) |
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[5751a56] | 606 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_WRITE , |
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| 607 | return IS_DEFINED(CFA_HAVE_IORING_OP_WRITE); |
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[0a92c78] | 608 | |
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| 609 | if( /*func == (fptr_t)splice || */ |
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[f00b26d4] | 610 | func == (fptr_t)cfa_splice ) |
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[5751a56] | 611 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_SPLICE , |
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| 612 | return IS_DEFINED(CFA_HAVE_IORING_OP_SPLICE); |
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[0a92c78] | 613 | |
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| 614 | if( /*func == (fptr_t)tee || */ |
---|
| 615 | func == (fptr_t)cfa_tee ) |
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[5751a56] | 616 | #define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_TEE , |
---|
| 617 | return IS_DEFINED(CFA_HAVE_IORING_OP_TEE); |
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[4b84e35] | 618 | #endif |
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| 619 | |
---|
| 620 | return false; |
---|
[85eafc5] | 621 | } |
---|