472 lines
11 KiB
C
472 lines
11 KiB
C
/* 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(__has_feature)
|
|
# if __has_feature(memory_sanitizer)
|
|
# define MSAN_ACTIVE 1
|
|
# include <sanitizer/msan_interface.h>
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(__i386__)
|
|
# ifndef __NR_socketcall
|
|
# define __NR_socketcall 102
|
|
# endif
|
|
#endif
|
|
|
|
#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_accept4
|
|
# if defined(__x86_64__)
|
|
# define __NR_accept4 288
|
|
# elif defined(__i386__)
|
|
/* Nothing. Handled through socketcall(). */
|
|
# elif defined(__arm__)
|
|
# define __NR_accept4 (UV_SYSCALL_BASE + 366)
|
|
# endif
|
|
#endif /* __NR_accept4 */
|
|
|
|
#ifndef __NR_eventfd
|
|
# if defined(__x86_64__)
|
|
# define __NR_eventfd 284
|
|
# elif defined(__i386__)
|
|
# define __NR_eventfd 323
|
|
# elif defined(__arm__)
|
|
# define __NR_eventfd (UV_SYSCALL_BASE + 351)
|
|
# endif
|
|
#endif /* __NR_eventfd */
|
|
|
|
#ifndef __NR_eventfd2
|
|
# if defined(__x86_64__)
|
|
# define __NR_eventfd2 290
|
|
# elif defined(__i386__)
|
|
# define __NR_eventfd2 328
|
|
# elif defined(__arm__)
|
|
# define __NR_eventfd2 (UV_SYSCALL_BASE + 356)
|
|
# endif
|
|
#endif /* __NR_eventfd2 */
|
|
|
|
#ifndef __NR_epoll_create
|
|
# if defined(__x86_64__)
|
|
# define __NR_epoll_create 213
|
|
# elif defined(__i386__)
|
|
# define __NR_epoll_create 254
|
|
# elif defined(__arm__)
|
|
# define __NR_epoll_create (UV_SYSCALL_BASE + 250)
|
|
# endif
|
|
#endif /* __NR_epoll_create */
|
|
|
|
#ifndef __NR_epoll_create1
|
|
# if defined(__x86_64__)
|
|
# define __NR_epoll_create1 291
|
|
# elif defined(__i386__)
|
|
# define __NR_epoll_create1 329
|
|
# elif defined(__arm__)
|
|
# define __NR_epoll_create1 (UV_SYSCALL_BASE + 357)
|
|
# endif
|
|
#endif /* __NR_epoll_create1 */
|
|
|
|
#ifndef __NR_epoll_ctl
|
|
# if defined(__x86_64__)
|
|
# define __NR_epoll_ctl 233 /* used to be 214 */
|
|
# elif defined(__i386__)
|
|
# define __NR_epoll_ctl 255
|
|
# elif defined(__arm__)
|
|
# define __NR_epoll_ctl (UV_SYSCALL_BASE + 251)
|
|
# endif
|
|
#endif /* __NR_epoll_ctl */
|
|
|
|
#ifndef __NR_epoll_wait
|
|
# if defined(__x86_64__)
|
|
# define __NR_epoll_wait 232 /* used to be 215 */
|
|
# elif defined(__i386__)
|
|
# define __NR_epoll_wait 256
|
|
# elif defined(__arm__)
|
|
# define __NR_epoll_wait (UV_SYSCALL_BASE + 252)
|
|
# endif
|
|
#endif /* __NR_epoll_wait */
|
|
|
|
#ifndef __NR_epoll_pwait
|
|
# if defined(__x86_64__)
|
|
# define __NR_epoll_pwait 281
|
|
# elif defined(__i386__)
|
|
# define __NR_epoll_pwait 319
|
|
# elif defined(__arm__)
|
|
# define __NR_epoll_pwait (UV_SYSCALL_BASE + 346)
|
|
# endif
|
|
#endif /* __NR_epoll_pwait */
|
|
|
|
#ifndef __NR_inotify_init
|
|
# if defined(__x86_64__)
|
|
# define __NR_inotify_init 253
|
|
# elif defined(__i386__)
|
|
# define __NR_inotify_init 291
|
|
# elif defined(__arm__)
|
|
# define __NR_inotify_init (UV_SYSCALL_BASE + 316)
|
|
# endif
|
|
#endif /* __NR_inotify_init */
|
|
|
|
#ifndef __NR_inotify_init1
|
|
# if defined(__x86_64__)
|
|
# define __NR_inotify_init1 294
|
|
# elif defined(__i386__)
|
|
# define __NR_inotify_init1 332
|
|
# elif defined(__arm__)
|
|
# define __NR_inotify_init1 (UV_SYSCALL_BASE + 360)
|
|
# endif
|
|
#endif /* __NR_inotify_init1 */
|
|
|
|
#ifndef __NR_inotify_add_watch
|
|
# if defined(__x86_64__)
|
|
# define __NR_inotify_add_watch 254
|
|
# elif defined(__i386__)
|
|
# define __NR_inotify_add_watch 292
|
|
# elif defined(__arm__)
|
|
# define __NR_inotify_add_watch (UV_SYSCALL_BASE + 317)
|
|
# endif
|
|
#endif /* __NR_inotify_add_watch */
|
|
|
|
#ifndef __NR_inotify_rm_watch
|
|
# if defined(__x86_64__)
|
|
# define __NR_inotify_rm_watch 255
|
|
# elif defined(__i386__)
|
|
# define __NR_inotify_rm_watch 293
|
|
# elif defined(__arm__)
|
|
# define __NR_inotify_rm_watch (UV_SYSCALL_BASE + 318)
|
|
# endif
|
|
#endif /* __NR_inotify_rm_watch */
|
|
|
|
#ifndef __NR_pipe2
|
|
# if defined(__x86_64__)
|
|
# define __NR_pipe2 293
|
|
# elif defined(__i386__)
|
|
# define __NR_pipe2 331
|
|
# elif defined(__arm__)
|
|
# define __NR_pipe2 (UV_SYSCALL_BASE + 359)
|
|
# endif
|
|
#endif /* __NR_pipe2 */
|
|
|
|
#ifndef __NR_recvmmsg
|
|
# if defined(__x86_64__)
|
|
# define __NR_recvmmsg 299
|
|
# elif defined(__i386__)
|
|
# define __NR_recvmmsg 337
|
|
# 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(__i386__)
|
|
# define __NR_sendmmsg 345
|
|
# 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 */
|
|
|
|
|
|
int uv__accept4(int fd, struct sockaddr* addr, socklen_t* addrlen, int flags) {
|
|
#if defined(__i386__)
|
|
unsigned long args[4];
|
|
int r;
|
|
|
|
args[0] = (unsigned long) fd;
|
|
args[1] = (unsigned long) addr;
|
|
args[2] = (unsigned long) addrlen;
|
|
args[3] = (unsigned long) flags;
|
|
|
|
r = syscall(__NR_socketcall, 18 /* SYS_ACCEPT4 */, args);
|
|
|
|
/* socketcall() raises EINVAL when SYS_ACCEPT4 is not supported but so does
|
|
* a bad flags argument. Try to distinguish between the two cases.
|
|
*/
|
|
if (r == -1)
|
|
if (errno == EINVAL)
|
|
if ((flags & ~(UV__SOCK_CLOEXEC|UV__SOCK_NONBLOCK)) == 0)
|
|
errno = ENOSYS;
|
|
|
|
return r;
|
|
#elif defined(__NR_accept4)
|
|
return syscall(__NR_accept4, fd, addr, addrlen, flags);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__eventfd(unsigned int count) {
|
|
#if defined(__NR_eventfd)
|
|
return syscall(__NR_eventfd, count);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__eventfd2(unsigned int count, int flags) {
|
|
#if defined(__NR_eventfd2)
|
|
return syscall(__NR_eventfd2, count, flags);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__epoll_create(int size) {
|
|
#if defined(__NR_epoll_create)
|
|
return syscall(__NR_epoll_create, size);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__epoll_create1(int flags) {
|
|
#if defined(__NR_epoll_create1)
|
|
return syscall(__NR_epoll_create1, flags);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__epoll_ctl(int epfd, int op, int fd, struct uv__epoll_event* events) {
|
|
#if defined(__NR_epoll_ctl)
|
|
return syscall(__NR_epoll_ctl, epfd, op, fd, events);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__epoll_wait(int epfd,
|
|
struct uv__epoll_event* events,
|
|
int nevents,
|
|
int timeout) {
|
|
#if defined(__NR_epoll_wait)
|
|
int result;
|
|
result = syscall(__NR_epoll_wait, epfd, events, nevents, timeout);
|
|
#if MSAN_ACTIVE
|
|
if (result > 0)
|
|
__msan_unpoison(events, sizeof(events[0]) * result);
|
|
#endif
|
|
return result;
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__epoll_pwait(int epfd,
|
|
struct uv__epoll_event* events,
|
|
int nevents,
|
|
int timeout,
|
|
uint64_t sigmask) {
|
|
#if defined(__NR_epoll_pwait)
|
|
int result;
|
|
result = syscall(__NR_epoll_pwait,
|
|
epfd,
|
|
events,
|
|
nevents,
|
|
timeout,
|
|
&sigmask,
|
|
sizeof(sigmask));
|
|
#if MSAN_ACTIVE
|
|
if (result > 0)
|
|
__msan_unpoison(events, sizeof(events[0]) * result);
|
|
#endif
|
|
return result;
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__inotify_init(void) {
|
|
#if defined(__NR_inotify_init)
|
|
return syscall(__NR_inotify_init);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__inotify_init1(int flags) {
|
|
#if defined(__NR_inotify_init1)
|
|
return syscall(__NR_inotify_init1, flags);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__inotify_add_watch(int fd, const char* path, uint32_t mask) {
|
|
#if defined(__NR_inotify_add_watch)
|
|
return syscall(__NR_inotify_add_watch, fd, path, mask);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__inotify_rm_watch(int fd, int32_t wd) {
|
|
#if defined(__NR_inotify_rm_watch)
|
|
return syscall(__NR_inotify_rm_watch, fd, wd);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__pipe2(int pipefd[2], int flags) {
|
|
#if defined(__NR_pipe2)
|
|
int result;
|
|
result = syscall(__NR_pipe2, pipefd, flags);
|
|
#if MSAN_ACTIVE
|
|
if (!result)
|
|
__msan_unpoison(pipefd, sizeof(int[2]));
|
|
#endif
|
|
return result;
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__sendmmsg(int fd,
|
|
struct uv__mmsghdr* mmsg,
|
|
unsigned int vlen,
|
|
unsigned int flags) {
|
|
#if defined(__NR_sendmmsg)
|
|
return syscall(__NR_sendmmsg, fd, mmsg, vlen, flags);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__recvmmsg(int fd,
|
|
struct uv__mmsghdr* mmsg,
|
|
unsigned int vlen,
|
|
unsigned int flags,
|
|
struct timespec* timeout) {
|
|
#if defined(__NR_recvmmsg)
|
|
return syscall(__NR_recvmmsg, fd, mmsg, vlen, flags, timeout);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__utimesat(int dirfd,
|
|
const char* path,
|
|
const struct timespec times[2],
|
|
int flags)
|
|
{
|
|
#if defined(__NR_utimensat)
|
|
return syscall(__NR_utimensat, dirfd, path, times, flags);
|
|
#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)
|
|
return syscall(__NR_preadv, fd, iov, iovcnt, (long)offset, (long)(offset >> 32));
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
ssize_t uv__pwritev(int fd, const struct iovec *iov, int iovcnt, int64_t offset) {
|
|
#if defined(__NR_pwritev)
|
|
return syscall(__NR_pwritev, fd, iov, iovcnt, (long)offset, (long)(offset >> 32));
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
int uv__dup3(int oldfd, int newfd, int flags) {
|
|
#if defined(__NR_dup3)
|
|
return syscall(__NR_dup3, oldfd, newfd, flags);
|
|
#else
|
|
return errno = ENOSYS, -1;
|
|
#endif
|
|
}
|