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provide an internal namespace-safe __fstat

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this avoids the need for implementation-internal callers to depend on
the nonstandard AT_EMPTY_PATH extension to use __fstatat and isolates
knowledge of that extension to the implementation of __fstat.
This commit is contained in:
Rich Felker 2022-05-04 10:51:00 -04:00
parent fb10dc288d
commit 05a55868ff
2 changed files with 5 additions and 2 deletions
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1
src/include/sys/stat.h
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@ -3,6 +3,7 @@
#include "../../../include/sys/stat.h" #include "../../../include/sys/stat.h"
hidden int __fstat(int, struct stat *);
hidden int __fstatat(int, const char *restrict, struct stat *restrict, int); hidden int __fstatat(int, const char *restrict, struct stat *restrict, int);
#endif #endif

6
src/stat/fstat.c
View File

@ -4,12 +4,14 @@
#include <fcntl.h> #include <fcntl.h>
#include "syscall.h" #include "syscall.h"
int fstat(int fd, struct stat *st) int __fstat(int fd, struct stat *st)
{ {
if (fd<0) return __syscall_ret(-EBADF); if (fd<0) return __syscall_ret(-EBADF);
return fstatat(fd, "", st, AT_EMPTY_PATH); return __fstatat(fd, "", st, AT_EMPTY_PATH);
} }
weak_alias(__fstat, fstat);
#if !_REDIR_TIME64 #if !_REDIR_TIME64
weak_alias(fstat, fstat64); weak_alias(fstat, fstat64);
#endif #endif