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 <[email protected]>
---
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 416cab6..29e21ac 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
--
1.7.1
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