diff options
| author | Wang Yufen <wangyufen@huawei.com> | 2014-11-11 15:59:11 +0800 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2015-01-23 21:13:27 +0100 |
| commit | e55f589191162eb40f44696c77e569049313d381 (patch) | |
| tree | cecf4632c552ce1fb501683c9935d84f4c361c56 /libc | |
| parent | 217f0a86c07beae6a27d422b5f46ee853f3a447a (diff) | |
add argument check in mknod
mknod() in glibc/eglibc will check the argument, like this,
...
if (k_dev != dev) {
__set_errno (EINVAL);
return -1;
}
...
So add argument check in uclibc's mknod() too.
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/sysdeps/linux/common/mknod.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/mknod.c b/libc/sysdeps/linux/common/mknod.c index 416cab6d0..e0c54e6e3 100644 --- a/libc/sysdeps/linux/common/mknod.c +++ b/libc/sysdeps/linux/common/mknod.c @@ -24,6 +24,10 @@ int mknod(const char *path, mode_t mode, dev_t dev) /* We must convert the value to dev_t type used by the kernel. */ k_dev = (dev) & ((1ULL << 32) - 1); + if (k_dev != dev) { + __set_errno(EINVAL); + return -1; + } return INLINE_SYSCALL(mknod, 3, path, mode, (unsigned int)k_dev); } #endif |