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authorWang Yufen <wangyufen@huawei.com>2014-11-11 15:59:11 +0800
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2015-01-23 21:13:27 +0100
commite55f589191162eb40f44696c77e569049313d381 (patch)
treececf4632c552ce1fb501683c9935d84f4c361c56
parent217f0a86c07beae6a27d422b5f46ee853f3a447a (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>
-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..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