| 1 | /* POSIX-specific extra functions. |
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| 2 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | /* These wrapper functions use POSIX types and therefore cannot be |
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| 20 | declared in <support/support.h>. */ |
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| 21 | |
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| 22 | #ifndef SUPPORT_XUNISTD_H |
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| 23 | #define SUPPORT_XUNISTD_H |
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| 24 | |
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| 25 | #include <sys/cdefs.h> |
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| 26 | #include <sys/types.h> |
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| 27 | #include <sys/stat.h> |
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| 28 | #include <unistd.h> |
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| 29 | |
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| 30 | __BEGIN_DECLS |
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| 31 | |
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| 32 | struct stat64; |
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| 33 | |
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| 34 | pid_t xfork (void); |
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| 35 | pid_t xwaitpid (pid_t, int *status, int flags); |
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| 36 | void xpipe (int[2]); |
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| 37 | void xdup2 (int, int); |
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| 38 | int xopen (const char *path, int flags, mode_t); |
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| 39 | #ifndef __USE_TIME_BITS64 |
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| 40 | # ifdef __USE_FILE_OFFSET64 |
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| 41 | void xstat (const char *path, struct stat *); |
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| 42 | void xlstat (const char *path, struct stat *); |
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| 43 | void xfstat (int fd, struct stat *); |
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| 44 | # else |
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| 45 | void xstat (const char *path, struct stat64 *); |
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| 46 | void xlstat (const char *path, struct stat64 *); |
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| 47 | void xfstat (int fd, struct stat64 *); |
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| 48 | # endif |
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| 49 | #else |
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| 50 | void __REDIRECT (xstat, (const char *path, struct stat *), xstat_time64); |
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| 51 | void __REDIRECT (xlstat, (const char *path, struct stat *), xlstat_time64); |
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| 52 | void __REDIRECT (xfstat, (int fd, struct stat *), xfstat_time64); |
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| 53 | #endif |
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| 54 | void xmkdir (const char *path, mode_t); |
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| 55 | void xchroot (const char *path); |
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| 56 | void xunlink (const char *path); |
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| 57 | long xsysconf (int name); |
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| 58 | long long xlseek (int fd, long long offset, int whence); |
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| 59 | void xftruncate (int fd, long long length); |
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| 60 | void xsymlink (const char *target, const char *linkpath); |
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| 61 | void xchdir (const char *path); |
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| 62 | void xfchmod (int fd, mode_t mode); |
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| 63 | void xchmod (const char *pathname, mode_t mode); |
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| 64 | |
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| 65 | /* Equivalent of "mkdir -p". */ |
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| 66 | void xmkdirp (const char *, mode_t); |
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| 67 | |
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| 68 | /* Read the link at PATH. The caller should free the returned string |
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| 69 | with free. */ |
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| 70 | char *xreadlink (const char *path); |
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| 71 | |
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| 72 | /* Close the file descriptor. Ignore EINTR errors, but terminate the |
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| 73 | process on other errors. */ |
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| 74 | void xclose (int); |
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| 75 | |
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| 76 | /* Write the buffer. Retry on short writes. */ |
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| 77 | void xwrite (int, const void *, size_t); |
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| 78 | |
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| 79 | /* Invoke mmap with a zero file offset. */ |
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| 80 | void *xmmap (void *addr, size_t length, int prot, int flags, int fd); |
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| 81 | void xmprotect (void *addr, size_t length, int prot); |
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| 82 | void xmunmap (void *addr, size_t length); |
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| 83 | |
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| 84 | ssize_t xcopy_file_range(int fd_in, loff_t *off_in, int fd_out, |
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| 85 | loff_t *off_out, size_t len, unsigned int flags); |
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| 86 | |
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| 87 | __END_DECLS |
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| 88 | |
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| 89 | #endif /* SUPPORT_XUNISTD_H */ |
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| 90 | |
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