diff options
| -rw-r--r-- | libc/misc/internals/__uClibc_main.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/libc/misc/internals/__uClibc_main.c b/libc/misc/internals/__uClibc_main.c index 60989298e..351161593 100644 --- a/libc/misc/internals/__uClibc_main.c +++ b/libc/misc/internals/__uClibc_main.c @@ -132,16 +132,14 @@ size_t __pagesize = 0; static void __check_one_fd(int fd, int mode) { /* Check if the specified fd is already open */ - if (unlikely(__libc_fcntl(fd, F_GETFD)==-1 && *(__errno_location())==EBADF)) + if (__libc_fcntl(fd, F_GETFD) == -1) { /* The descriptor is probably not open, so try to use /dev/null */ - struct stat st; int nullfd = __libc_open(_PATH_DEVNULL, mode); /* /dev/null is major=1 minor=3. Make absolutely certain * that is in fact the device that we have opened and not * some other wierd file... */ - if ( (nullfd!=fd) || fstat(fd, &st) || !S_ISCHR(st.st_mode) || - (st.st_rdev != makedev(1, 3))) + if (nullfd!=fd) { abort(); } @@ -155,13 +153,13 @@ static int __check_suid(void) uid = getuid(); euid = geteuid(); + if (uid != euid) + return 1; gid = getgid(); egid = getegid(); - - if(uid == euid && gid == egid) { - return 0; - } - return 1; + if (gid != egid) + return 1; + return 0; /* we are not suid */ } #endif |