47 lines
909 B
C++
47 lines
909 B
C++
#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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int fstat(int fildes, struct stat* buf)
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{
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return syscall(SYS_FSTAT, fildes, buf);
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}
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int fstatat(int fd, const char* __restrict path, struct stat* __restrict buf, int flag)
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{
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if (flag & ~AT_SYMLINK_NOFOLLOW)
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{
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errno = EINVAL;
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return -1;
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}
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int target = openat(fd, path, (flag & AT_SYMLINK_NOFOLLOW) ? O_NOFOLLOW : 0);
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if (target == -1)
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return -1;
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int ret = fstat(target, buf);
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close(target);
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return ret;
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}
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int lstat(const char* __restrict path, struct stat* __restrict buf)
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{
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int fd = open(path, O_SEARCH | O_NOFOLLOW);
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if (fd == -1)
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return -1;
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int ret = fstat(fd, buf);
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close(fd);
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return ret;
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}
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int stat(const char* __restrict path, struct stat* __restrict buf)
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{
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int fd = open(path, O_SEARCH);
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if (fd == -1)
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return -1;
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int ret = fstat(fd, buf);
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close(fd);
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return ret;
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}
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