mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-04 13:30:12 -05:00
3ee852b808
Keep separate map for fd to files so we can implement dup. Filter out duplicates in enumfmt. tryfmt should return the closest match. Use pthread_once to init the global state. Make things mostly work in GStreamer.
140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/* PipeWire
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*
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* Copyright © 2021 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "pipewire-v4l2.h"
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#define SPA_EXPORT __attribute__((visibility("default")))
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#define extract_va_arg(type, arg, last) \
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{ \
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va_list ap; \
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va_start(ap, last); \
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arg = va_arg(ap, type); \
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va_end(ap); \
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}
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SPA_EXPORT int open(const char *path, int oflag, ...)
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{
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mode_t mode = 0;
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if (oflag & O_CREAT || oflag & O_TMPFILE)
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extract_va_arg(mode_t, mode, oflag);
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return get_fops()->openat(AT_FDCWD, path, oflag, mode);
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}
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/* _FORTIFY_SOURCE redirects open to __open_2 */
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SPA_EXPORT int __open_2(const char *path, int oflag)
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{
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return open(path, oflag);
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}
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#ifndef open64
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SPA_EXPORT int open64(const char *path, int oflag, ...)
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{
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mode_t mode = 0;
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if (oflag & O_CREAT || oflag & O_TMPFILE)
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extract_va_arg(mode_t, mode, oflag);
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return get_fops()->openat(AT_FDCWD, path, oflag | O_LARGEFILE, mode);
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}
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SPA_EXPORT int __open64_2(const char *path, int oflag)
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{
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return open(path, oflag);
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}
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#endif
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SPA_EXPORT int openat(int dirfd, const char *path, int oflag, ...)
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{
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mode_t mode = 0;
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if (oflag & O_CREAT || oflag & O_TMPFILE)
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extract_va_arg(mode_t, mode, oflag);
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return get_fops()->openat(dirfd, path, oflag, mode);
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}
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SPA_EXPORT int __openat_2(int dirfd, const char *path, int oflag)
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{
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return openat(dirfd, path, oflag);
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}
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#ifndef openat64
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SPA_EXPORT int openat64(int dirfd, const char *path, int oflag, ...)
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{
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mode_t mode = 0;
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if (oflag & O_CREAT || oflag & O_TMPFILE)
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extract_va_arg(mode_t, mode, oflag);
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return get_fops()->openat(dirfd, path, oflag | O_LARGEFILE, mode);
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}
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SPA_EXPORT int __openat64_2(int dirfd, const char *path, int oflag)
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{
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return openat(dirfd, path, oflag);
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}
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#endif
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SPA_EXPORT int dup(int oldfd)
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{
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return get_fops()->dup(oldfd);
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}
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SPA_EXPORT int close(int fd)
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{
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return get_fops()->close(fd);
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}
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SPA_EXPORT void *mmap(void *addr, size_t length, int prot, int flags,
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int fd, off_t offset)
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{
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return get_fops()->mmap(addr, length, prot, flags, fd, offset);
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}
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#ifndef mmap64
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SPA_EXPORT void *mmap64(void *addr, size_t length, int prot, int flags,
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int fd, off64_t offset)
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{
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return get_fops()->mmap(addr, length, prot, flags, fd, offset);
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}
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#endif
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SPA_EXPORT int munmap(void *addr, size_t length)
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{
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return get_fops()->munmap(addr, length);
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}
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SPA_EXPORT int ioctl(int fd, unsigned long int request, ...)
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{
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void *arg;
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extract_va_arg(void *, arg, request);
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return get_fops()->ioctl(fd, request, arg);
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}
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