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authorwangyufen <wangyufen@huawei.com>2014-11-11 15:59:11 +0800
committerWaldemar Brodkorb <wbx@openadk.org>2014-12-10 13:05:58 -0600
commit0cda37ffaf3cb7aec2c1c8b49e2a5b8f82255c3e (patch)
tree0ac34147c8f71f35dbf53b97541aa7ba4b8b9925 /libc/sysdeps/linux/common
parent86087816201d61f1b72d8bd7d91cfc7eb26422e9 (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>
Diffstat (limited to 'libc/sysdeps/linux/common')
-rw-r--r--libc/sysdeps/linux/common/mknod.c4
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..794e19f57 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