diff options
Diffstat (limited to 'Utilities/cmlibuv/src/unix/linux-syscalls.c')
| -rw-r--r-- | Utilities/cmlibuv/src/unix/linux-syscalls.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/Utilities/cmlibuv/src/unix/linux-syscalls.c b/Utilities/cmlibuv/src/unix/linux-syscalls.c new file mode 100644 index 0000000000..5071cd56d1 --- /dev/null +++ b/Utilities/cmlibuv/src/unix/linux-syscalls.c @@ -0,0 +1,264 @@ +/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include "linux-syscalls.h" +#include <unistd.h> +#include <signal.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <errno.h> + +#if defined(__arm__) +# if defined(__thumb__) || defined(__ARM_EABI__) +# define UV_SYSCALL_BASE 0 +# else +# define UV_SYSCALL_BASE 0x900000 +# endif +#endif /* __arm__ */ + +#ifndef __NR_recvmmsg +# if defined(__x86_64__) +# define __NR_recvmmsg 299 +# elif defined(__arm__) +# define __NR_recvmmsg (UV_SYSCALL_BASE + 365) +# endif +#endif /* __NR_recvmsg */ + +#ifndef __NR_sendmmsg +# if defined(__x86_64__) +# define __NR_sendmmsg 307 +# elif defined(__arm__) +# define __NR_sendmmsg (UV_SYSCALL_BASE + 374) +# endif +#endif /* __NR_sendmmsg */ + +#ifndef __NR_utimensat +# if defined(__x86_64__) +# define __NR_utimensat 280 +# elif defined(__i386__) +# define __NR_utimensat 320 +# elif defined(__arm__) +# define __NR_utimensat (UV_SYSCALL_BASE + 348) +# endif +#endif /* __NR_utimensat */ + +#ifndef __NR_preadv +# if defined(__x86_64__) +# define __NR_preadv 295 +# elif defined(__i386__) +# define __NR_preadv 333 +# elif defined(__arm__) +# define __NR_preadv (UV_SYSCALL_BASE + 361) +# endif +#endif /* __NR_preadv */ + +#ifndef __NR_pwritev +# if defined(__x86_64__) +# define __NR_pwritev 296 +# elif defined(__i386__) +# define __NR_pwritev 334 +# elif defined(__arm__) +# define __NR_pwritev (UV_SYSCALL_BASE + 362) +# endif +#endif /* __NR_pwritev */ + +#ifndef __NR_dup3 +# if defined(__x86_64__) +# define __NR_dup3 292 +# elif defined(__i386__) +# define __NR_dup3 330 +# elif defined(__arm__) +# define __NR_dup3 (UV_SYSCALL_BASE + 358) +# endif +#endif /* __NR_pwritev */ + +#ifndef __NR_copy_file_range +# if defined(__x86_64__) +# define __NR_copy_file_range 326 +# elif defined(__i386__) +# define __NR_copy_file_range 377 +# elif defined(__s390__) +# define __NR_copy_file_range 375 +# elif defined(__arm__) +# define __NR_copy_file_range (UV_SYSCALL_BASE + 391) +# elif defined(__aarch64__) +# define __NR_copy_file_range 285 +# elif defined(__powerpc__) +# define __NR_copy_file_range 379 +# elif defined(__arc__) +# define __NR_copy_file_range 285 +# endif +#endif /* __NR_copy_file_range */ + +#ifndef __NR_statx +# if defined(__x86_64__) +# define __NR_statx 332 +# elif defined(__i386__) +# define __NR_statx 383 +# elif defined(__aarch64__) +# define __NR_statx 397 +# elif defined(__arm__) +# define __NR_statx (UV_SYSCALL_BASE + 397) +# elif defined(__ppc__) +# define __NR_statx 383 +# elif defined(__s390__) +# define __NR_statx 379 +# endif +#endif /* __NR_statx */ + +#ifndef __NR_getrandom +# if defined(__x86_64__) +# define __NR_getrandom 318 +# elif defined(__i386__) +# define __NR_getrandom 355 +# elif defined(__aarch64__) +# define __NR_getrandom 384 +# elif defined(__arm__) +# define __NR_getrandom (UV_SYSCALL_BASE + 384) +# elif defined(__ppc__) +# define __NR_getrandom 359 +# elif defined(__s390__) +# define __NR_getrandom 349 +# endif +#endif /* __NR_getrandom */ + +struct uv__mmsghdr; + +int uv__sendmmsg(int fd, struct uv__mmsghdr* mmsg, unsigned int vlen) { +#if defined(__i386__) + unsigned long args[4]; + int rc; + + args[0] = (unsigned long) fd; + args[1] = (unsigned long) mmsg; + args[2] = (unsigned long) vlen; + args[3] = /* flags */ 0; + + /* socketcall() raises EINVAL when SYS_SENDMMSG is not supported. */ + rc = syscall(/* __NR_socketcall */ 102, 20 /* SYS_SENDMMSG */, args); + if (rc == -1) + if (errno == EINVAL) + errno = ENOSYS; + + return rc; +#elif defined(__NR_sendmmsg) + return syscall(__NR_sendmmsg, fd, mmsg, vlen, /* flags */ 0); +#else + return errno = ENOSYS, -1; +#endif +} + + +int uv__recvmmsg(int fd, struct uv__mmsghdr* mmsg, unsigned int vlen) { +#if defined(__i386__) + unsigned long args[5]; + int rc; + + args[0] = (unsigned long) fd; + args[1] = (unsigned long) mmsg; + args[2] = (unsigned long) vlen; + args[3] = /* flags */ 0; + args[4] = /* timeout */ 0; + + /* socketcall() raises EINVAL when SYS_RECVMMSG is not supported. */ + rc = syscall(/* __NR_socketcall */ 102, 19 /* SYS_RECVMMSG */, args); + if (rc == -1) + if (errno == EINVAL) + errno = ENOSYS; + + return rc; +#elif defined(__NR_recvmmsg) + return syscall(__NR_recvmmsg, fd, mmsg, vlen, /* flags */ 0, /* timeout */ 0); +#else + return errno = ENOSYS, -1; +#endif +} + + +ssize_t uv__preadv(int fd, const struct iovec *iov, int iovcnt, int64_t offset) { +#if !defined(__NR_preadv) || defined(__ANDROID_API__) && __ANDROID_API__ < 24 + return errno = ENOSYS, -1; +#else + return syscall(__NR_preadv, fd, iov, iovcnt, (long)offset, (long)(offset >> 32)); +#endif +} + + +ssize_t uv__pwritev(int fd, const struct iovec *iov, int iovcnt, int64_t offset) { +#if !defined(__NR_pwritev) || defined(__ANDROID_API__) && __ANDROID_API__ < 24 + return errno = ENOSYS, -1; +#else + return syscall(__NR_pwritev, fd, iov, iovcnt, (long)offset, (long)(offset >> 32)); +#endif +} + + +int uv__dup3(int oldfd, int newfd, int flags) { +#if !defined(__NR_dup3) || defined(__ANDROID_API__) && __ANDROID_API__ < 21 + return errno = ENOSYS, -1; +#else + return syscall(__NR_dup3, oldfd, newfd, flags); +#endif +} + + +ssize_t +uv__fs_copy_file_range(int fd_in, + off_t* off_in, + int fd_out, + off_t* off_out, + size_t len, + unsigned int flags) +{ +#ifdef __NR_copy_file_range + return syscall(__NR_copy_file_range, + fd_in, + off_in, + fd_out, + off_out, + len, + flags); +#else + return errno = ENOSYS, -1; +#endif +} + + +int uv__statx(int dirfd, + const char* path, + int flags, + unsigned int mask, + struct uv__statx* statxbuf) { +#if !defined(__NR_statx) || defined(__ANDROID_API__) && __ANDROID_API__ < 30 + return errno = ENOSYS, -1; +#else + return syscall(__NR_statx, dirfd, path, flags, mask, statxbuf); +#endif +} + + +ssize_t uv__getrandom(void* buf, size_t buflen, unsigned flags) { +#if !defined(__NR_getrandom) || defined(__ANDROID_API__) && __ANDROID_API__ < 28 + return errno = ENOSYS, -1; +#else + return syscall(__NR_getrandom, buf, buflen, flags); +#endif +} |