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bsd-user: Implement do_freebsd_realpathat syscall

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Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
This commit is contained in:
Mikaël Urankar 2023-08-13 10:41:48 +02:00 committed by Warner Losh
parent 292f00c05b
commit 292bfd0f51
1 changed files with 26 additions and 0 deletions
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26
bsd-user/freebsd/os-stat.h
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@ -634,4 +634,30 @@ static inline abi_long do_freebsd_fcntl(abi_long arg1, abi_long arg2,
return ret;
}
#if defined(__FreeBSD_version) && __FreeBSD_version >= 1300080
extern int __realpathat(int fd, const char *path, char *buf, size_t size,
int flags);
/* https://svnweb.freebsd.org/base?view=revision&revision=358172 */
/* no man page */
static inline abi_long do_freebsd_realpathat(abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
abi_long ret;
void *p, *b;
LOCK_PATH(p, arg2);
b = lock_user(VERIFY_WRITE, arg3, arg4, 0);
if (b == NULL) {
UNLOCK_PATH(p, arg2);
return -TARGET_EFAULT;
}
ret = get_errno(__realpathat(arg1, p, b, arg4, arg5));
UNLOCK_PATH(p, arg2);
unlock_user(b, arg3, ret);
return ret;
}
#endif
#endif /* BSD_USER_FREEBSD_OS_STAT_H */