From: Markos Chandras <[email protected]>
Signed-off-by: Markos Chandras <[email protected]>
---
libc/sysdeps/linux/common/statfs.c | 49 ++++++++++++++++++++++++++++++++++++
1 files changed, 49 insertions(+), 0 deletions(-)
diff --git a/libc/sysdeps/linux/common/statfs.c
b/libc/sysdeps/linux/common/statfs.c
index d24bc9d..9f96b4d 100644
--- a/libc/sysdeps/linux/common/statfs.c
+++ b/libc/sysdeps/linux/common/statfs.c
@@ -12,7 +12,54 @@
#include <sys/param.h>
#include <sys/vfs.h>
+#if defined(__NR_statfs64) && ! defined(__NR_statfs)
+
+int __libc_statfs(const char* path, struct statfs* buf)
+{
+ struct statfs64 b;
+ int err;
+
+ /*
+ * See if pointer has a sane value.
+ * This does not prevent the user from
+ * passing an arbitrary possitive value
+ * that can lead to a segfault or potential
+ * security problems
+ */
+
+ if (buf == NULL || (int)buf < 0) {
+ __set_errno(EFAULT);
+ return -1;
+ }
+
+ err = INLINE_SYSCALL(statfs64, 3, path, sizeof(b), &b);
+
+ if (err < 0)
+ return -1;
+
+ buf->f_type = b.f_type;
+ buf->f_bsize = b.f_bsize;
+ buf->f_blocks = b.f_blocks;
+ buf->f_bfree = b.f_bfree;
+ buf->f_bavail = b.f_bavail;
+ buf->f_files = b.f_files;
+ buf->f_ffree = b.f_ffree;
+ buf->f_namelen = b.f_namelen;
+ buf->f_frsize = b.f_frsize;
+ buf->f_fsid = b.f_fsid;
+ memcpy(buf->f_spare, b.f_spare, sizeof(b.f_spare));
+
+ return err;
+}
+#if defined __UCLIBC_LINUX_SPECIFIC__ || defined __UCLIBC_HAS_THREADS_NATIVE__
+/* statfs is used by NPTL, so it must exported in case */
+weak_alias(__libc_statfs,statfs)
+#endif
+
+/* For systems which have both, prefer the old one */
+#else
extern __typeof(statfs) __libc_statfs attribute_hidden;
+
#define __NR___libc_statfs __NR_statfs
_syscall2(int, __libc_statfs, const char *, path, struct statfs *, buf)
@@ -20,3 +67,5 @@ _syscall2(int, __libc_statfs, const char *, path, struct
statfs *, buf)
/* statfs is used by NPTL, so it must exported in case */
weak_alias(__libc_statfs,statfs)
#endif
+
+#endif
--
1.7.1
_______________________________________________
uClibc mailing list
[email protected]
http://lists.busybox.net/mailman/listinfo/uclibc
