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| author | Ralf Baechle <ralf@linux-mips.org> | 2009-09-29 03:19:20 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-09-30 23:47:02 +0400 |
| commit | c0648e02db689b03564882044f32bc6c6e70c229 (patch) | |
| tree | e140b219dcddd5cbb5ffb390c37e6f893c261355 /arch/mips | |
| parent | b7a05871aac3a75a48faebcde92d881f9625c066 (diff) | |
| download | linux-c0648e02db689b03564882044f32bc6c6e70c229.tar.xz | |
MIPS: VPE: Fix build after the credential changes a while ago.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
| -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 f2397f00db43..ad4e017ed2f3 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); |