diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-10-13 09:31:28 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-10-13 09:31:34 +0200 |
commit | 9dbdd6c41c12fb42ee7188eafa7e1917b192af3a (patch) | |
tree | 06a9eb894bc976c5c20e84ccd74fd82b9b71aed4 /arch/mips/kernel/kspd.c | |
parent | 7a693d3f0d10f978ebdf3082c41404ab97106567 (diff) | |
parent | 161291396e76e0832c08f617eb9bd364d1648148 (diff) |
Merge commit 'v2.6.32-rc4' into perf/core
Merge reason: we were on an -rc1 base, merge up to -rc4.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/mips/kernel/kspd.c')
-rw-r--r-- | arch/mips/kernel/kspd.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c index f2397f00db4..ad4e017ed2f 100644 --- a/arch/mips/kernel/kspd.c +++ b/arch/mips/kernel/kspd.c @@ -172,13 +172,20 @@ static unsigned int translate_open_flags(int flags) } -static void sp_setfsuidgid( uid_t uid, gid_t gid) +static int sp_setfsuidgid(uid_t uid, gid_t gid) { - current->cred->fsuid = uid; - current->cred->fsgid = gid; + struct cred *new; - key_fsuid_changed(current); - key_fsgid_changed(current); + new = prepare_creds(); + if (!new) + return -ENOMEM; + + new->fsuid = uid; + new->fsgid = gid; + + commit_creds(new); + + return 0; } /* @@ -196,7 +203,7 @@ void sp_work_handle_request(void) mm_segment_t old_fs; struct timeval tv; struct timezone tz; - int cmd; + int err, cmd; char *vcwd; int size; @@ -225,8 +232,11 @@ void sp_work_handle_request(void) /* Run the syscall at the privilege of the user who loaded the SP program */ - if (vpe_getuid(tclimit)) - sp_setfsuidgid(vpe_getuid(tclimit), vpe_getgid(tclimit)); + if (vpe_getuid(tclimit)) { + err = sp_setfsuidgid(vpe_getuid(tclimit), vpe_getgid(tclimit)); + if (!err) + pr_err("Change of creds failed\n"); + } switch (sc.cmd) { /* needs the flags argument translating from SDE kit to @@ -283,8 +293,11 @@ void sp_work_handle_request(void) break; } /* switch */ - if (vpe_getuid(tclimit)) - sp_setfsuidgid( 0, 0); + if (vpe_getuid(tclimit)) { + err = sp_setfsuidgid(0, 0); + if (!err) + pr_err("restoring old creds failed\n"); + } old_fs = get_fs(); set_fs(KERNEL_DS); |