mirror of
https://git.musl-libc.org/git/musl
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1febd21d3f
a _REDIR_TIME64 macro is introduced, which the arch's alltypes.h is expected to define, to control redirection of symbol names for interfaces that involve time_t and derived types. this ensures that object files will only be linked to libc interfaces matching the ABI whose headers they were compiled against. along with time32 compat shims, which will be introduced separately, the redirection also makes it possible for a single libc (static or shared) to be used with object files produced with either the old (32-bit time_t) headers or the new ones after 64-bit time_t switchover takes place. mixing of such object files (or shared libraries) in the same program will also be possible, but must be done with care; ABI between libc and a consumer of the libc interfaces is guaranteed to match by the the symbol name redirection, but pairwise ABI between consumers of libc that define interfaces between each other in terms of time_t is not guaranteed to match. this change adds a dependency on an additional "GNU C" feature to the public headers for existing 32-bit archs, which is generally undesirable; however, the feature is one which glibc has depended on for a long time, and thus which any viable alternative compiler is going to need to provide. 64-bit archs are not affected, nor will future 32-bit archs be, regardless of whether they are "new" on the kernel side (e.g. riscv32) or just newly-added (e.g. a new sparc or xtensa port). the same applies to newly-added ABIs for existing machine-level archs.
128 lines
3.0 KiB
C
128 lines
3.0 KiB
C
#ifndef _SYS_STAT_H
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#define _SYS_STAT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <features.h>
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#define __NEED_dev_t
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#define __NEED_ino_t
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#define __NEED_mode_t
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#define __NEED_nlink_t
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#define __NEED_uid_t
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#define __NEED_gid_t
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#define __NEED_off_t
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#define __NEED_time_t
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#define __NEED_blksize_t
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#define __NEED_blkcnt_t
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#define __NEED_struct_timespec
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#include <bits/alltypes.h>
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#include <bits/stat.h>
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#define st_atime st_atim.tv_sec
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#define st_mtime st_mtim.tv_sec
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#define st_ctime st_ctim.tv_sec
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#define S_IFMT 0170000
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#define S_IFDIR 0040000
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#define S_IFCHR 0020000
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#define S_IFBLK 0060000
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#define S_IFREG 0100000
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#define S_IFIFO 0010000
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#define S_IFLNK 0120000
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#define S_IFSOCK 0140000
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#define S_TYPEISMQ(buf) 0
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#define S_TYPEISSEM(buf) 0
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#define S_TYPEISSHM(buf) 0
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#define S_TYPEISTMO(buf) 0
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#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
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#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
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#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
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#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
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#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
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#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
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#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
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#ifndef S_IRUSR
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#define S_ISUID 04000
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#define S_ISGID 02000
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#define S_ISVTX 01000
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#define S_IRUSR 0400
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#define S_IWUSR 0200
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#define S_IXUSR 0100
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#define S_IRWXU 0700
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#define S_IRGRP 0040
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#define S_IWGRP 0020
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#define S_IXGRP 0010
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#define S_IRWXG 0070
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#define S_IROTH 0004
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#define S_IWOTH 0002
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#define S_IXOTH 0001
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#define S_IRWXO 0007
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#endif
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#define UTIME_NOW 0x3fffffff
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#define UTIME_OMIT 0x3ffffffe
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int stat(const char *__restrict, struct stat *__restrict);
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int fstat(int, struct stat *);
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int lstat(const char *__restrict, struct stat *__restrict);
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int fstatat(int, const char *__restrict, struct stat *__restrict, int);
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int chmod(const char *, mode_t);
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int fchmod(int, mode_t);
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int fchmodat(int, const char *, mode_t, int);
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mode_t umask(mode_t);
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int mkdir(const char *, mode_t);
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int mkfifo(const char *, mode_t);
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int mkdirat(int, const char *, mode_t);
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int mkfifoat(int, const char *, mode_t);
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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int mknod(const char *, mode_t, dev_t);
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int mknodat(int, const char *, mode_t, dev_t);
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#endif
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int futimens(int, const struct timespec [2]);
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int utimensat(int, const char *, const struct timespec [2], int);
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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int lchmod(const char *, mode_t);
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#define S_IREAD S_IRUSR
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#define S_IWRITE S_IWUSR
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#define S_IEXEC S_IXUSR
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#endif
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#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
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#define stat64 stat
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#define fstat64 fstat
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#define lstat64 lstat
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#define fstatat64 fstatat
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#define blkcnt64_t blkcnt_t
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#define fsblkcnt64_t fsblkcnt_t
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#define fsfilcnt64_t fsfilcnt_t
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#define ino64_t ino_t
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#define off64_t off_t
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#endif
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#if _REDIR_TIME64
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__REDIR(stat, __stat_time64);
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__REDIR(fstat, __fstat_time64);
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__REDIR(lstat, __lstat_time64);
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__REDIR(fstatat, __fstatat_time64);
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__REDIR(futimens, __futimens_time64);
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__REDIR(utimensat, __utimensat_time64);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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