diff options
Diffstat (limited to 'src/stat/fstatat.c')
| -rw-r--r-- | src/stat/fstatat.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/src/stat/fstatat.c b/src/stat/fstatat.c index 582db442..f5bc3685 100644 --- a/src/stat/fstatat.c +++ b/src/stat/fstatat.c @@ -1,9 +1,40 @@ +#define _BSD_SOURCE #include <sys/stat.h> +#include <string.h> +#include <fcntl.h> +#include <errno.h> #include "syscall.h" -int fstatat(int fd, const char *restrict path, struct stat *restrict buf, int flag) +int fstatat(int fd, const char *restrict path, struct stat *restrict st, int flag) { - return syscall(SYS_fstatat, fd, path, buf, flag); + int ret; + + if (flag==AT_EMPTY_PATH && fd>=0 && !*path) { + ret = __syscall(SYS_fstat, fd, st); + if (ret==-EBADF && __syscall(SYS_fcntl, fd, F_GETFD)>=0) { + ret = __syscall(SYS_fstatat, fd, path, st, flag); + if (ret==-EINVAL) { + char buf[15+3*sizeof(int)]; + __procfdname(buf, fd); +#ifdef SYS_stat + ret = __syscall(SYS_stat, buf, st); +#else + ret = __syscall(SYS_fstatat, AT_FDCWD, buf, st, 0); +#endif + } + } + } +#ifdef SYS_lstat + else if ((fd == AT_FDCWD || *path=='/') && flag==AT_SYMLINK_NOFOLLOW) + ret = __syscall(SYS_lstat, path, st); +#endif +#ifdef SYS_stat + else if ((fd == AT_FDCWD || *path=='/') && !flag) + ret = __syscall(SYS_stat, path, st); +#endif + else ret = __syscall(SYS_fstatat, fd, path, st, flag); + + return __syscall_ret(ret); } weak_alias(fstatat, fstatat64); |