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[Qemu-devel] [PATCH] fsdev: Don't ignore setfsuid/setfsgid return values
From: |
M. Mohan Kumar |
Subject: |
[Qemu-devel] [PATCH] fsdev: Don't ignore setfsuid/setfsgid return values |
Date: |
Fri, 5 Oct 2012 14:06:19 +0530 |
From: "M. Mohan Kumar" <address@hidden>
In current implementation of setfsuid/setfsgid there is no way to know
if it failed by checking the return value. This patch assumes
setfsuid/setfsgid returns -1 in case of error. Eventually kernel code
needs to be fixed.
Signed-off-by: M. Mohan Kumar <address@hidden>
---
fsdev/virtfs-proxy-helper.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/fsdev/virtfs-proxy-helper.c b/fsdev/virtfs-proxy-helper.c
index f9a8270..ed5eede 100644
--- a/fsdev/virtfs-proxy-helper.c
+++ b/fsdev/virtfs-proxy-helper.c
@@ -290,9 +290,12 @@ static int setfsugid(int uid, int gid)
CAP_DAC_OVERRIDE,
};
- setfsgid(gid);
- setfsuid(uid);
-
+ if (setfsgid(gid) < 0) {
+ return -errno;
+ }
+ if (setfsuid(uid) < 0) {
+ return -errno;
+ }
if (uid != 0 || gid != 0) {
return do_cap_set(cap_list, ARRAY_SIZE(cap_list), 0);
}
--
1.7.11.4
- [Qemu-devel] [PATCH] fsdev: Don't ignore setfsuid/setfsgid return values,
M. Mohan Kumar <=