mirror of
https://github.com/systemd/systemd.git
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156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/*
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* udev_libc_wrapper - wrapping of functions missing in a specific libc
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* or not working in a statically compiled binary
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*
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* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef _UDEV_LIBC_WRAPPER_H_
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#define _UDEV_LIBC_WRAPPER_H_
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#include <string.h>
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#include <unistd.h>
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#include <stdint.h>
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/* needed until Inotify! syscalls reach glibc */
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#include <sys/syscall.h>
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#ifndef __NR_inotify_init
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#if defined(__i386__)
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# define __NR_inotify_init 291
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# define __NR_inotify_add_watch 292
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# define __NR_inotify_rm_watch 293
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#elif defined(__x86_64__)
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# define __NR_inotify_init 253
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# define __NR_inotify_add_watch 254
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# define __NR_inotify_rm_watch 255
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#elif defined(__powerpc__) || defined(__powerpc64__)
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# define __NR_inotify_init 275
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# define __NR_inotify_add_watch 276
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# define __NR_inotify_rm_watch 277
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#elif defined (__ia64__)
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# define __NR_inotify_init 1277
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# define __NR_inotify_add_watch 1278
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# define __NR_inotify_rm_watch 1279
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#elif defined (__s390__)
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# define __NR_inotify_init 284
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# define __NR_inotify_add_watch 285
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# define __NR_inotify_rm_watch 286
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#elif defined (__alpha__)
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# define __NR_inotify_init 444
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# define __NR_inotify_add_watch 445
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# define __NR_inotify_rm_watch 446
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#elif defined (__sparc__) || defined (__sparc64__)
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# define __NR_inotify_init 151
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# define __NR_inotify_add_watch 152
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# define __NR_inotify_rm_watch 156
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#elif defined (__arm__)
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# define __NR_inotify_init 316
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# define __NR_inotify_add_watch 317
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# define __NR_inotify_rm_watch 318
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#elif defined (__sh__)
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# define __NR_inotify_init 290
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# define __NR_inotify_add_watch 291
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# define __NR_inotify_rm_watch 292
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#else
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#warning "inotify unsupported on this architecture!"
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#endif
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#endif /* __NR_inotify_init */
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/* dummy if we don't have the syscalls defined */
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#ifndef __NR_inotify_init
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static inline int inotify_init(void)
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{
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return -1;
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}
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static inline int inotify_add_watch(int fd, const char *name, uint32_t mask)
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{
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return -1;
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}
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#else
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/* needed until /usr/include/sys/inotify.h is working */
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#ifdef __KLIBC__
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#include <sys/inotify.h>
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#else
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static inline int inotify_init(void)
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{
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return syscall(__NR_inotify_init);
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}
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static inline int inotify_add_watch(int fd, const char *name, uint32_t mask)
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{
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return syscall(__NR_inotify_add_watch, fd, name, mask);
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}
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#endif /* __KLIBC__ */
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#endif /* __NR_inotify_init */
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#ifndef IN_CREATE
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#define IN_CREATE 0x00000100 /* Subfile was created */
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#define IN_MOVED_FROM 0x00000040 /* File was moved from X */
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#define IN_MOVED_TO 0x00000080 /* File was moved to Y */
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#define IN_DELETE 0x00000200 /* Subfile was deleted */
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#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
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#define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */
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#endif /* IN_CREATE */
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/* needed for our signal handlers to work */
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#undef asmlinkage
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#ifdef __i386__
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#define asmlinkage __attribute__((regparm(0)))
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#else
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#define asmlinkage
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#endif /* __i386__ */
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/* headers are broken on some lazy platforms */
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#ifndef __FD_SET
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#define __FD_SET(d, set) ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
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#endif
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#ifndef __FD_CLR
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#define __FD_CLR(d, set) ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
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#endif
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#ifndef __FD_ISSET
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#define __FD_ISSET(d, set) (((set)->fds_bits[__FDELT(d)] & __FDMASK(d)) != 0)
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#endif
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#ifndef __FD_ZERO
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#define __FD_ZERO(set) ((void) memset ((void*) (set), 0, sizeof (fd_set)))
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#endif
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/* missing in some lazy distros */
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#ifndef NETLINK_KOBJECT_UEVENT
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#define NETLINK_KOBJECT_UEVENT 15
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#endif
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#ifndef SO_RCVBUFFORCE
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#define SO_RCVBUFFORCE 33
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#endif
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#ifdef __KLIBC__
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static inline int clearenv(void)
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{
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environ[0] = NULL;
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return 0;
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}
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#endif
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extern uid_t lookup_user(const char *user);
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extern gid_t lookup_group(const char *group);
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extern size_t strlcpy(char *dst, const char *src, size_t size);
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extern size_t strlcat(char *dst, const char *src, size_t size);
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#endif /* _UDEV_LIBC_WRAPPER_H_ */
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