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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-22 04:18:14 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-22 04:18:14 +0100
commit3eaded86ac3e7f00fb3eeb8162d89e9a34e42fb0 (patch)
tree4c48b9f1739dcb034186956bf39908803b524154 /fs/proc
parentMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/pow... (diff)
parentaudit: fix type of sessionid in audit_set_loginuid() (diff)
downloadlinux-3eaded86ac3e7f00fb3eeb8162d89e9a34e42fb0.tar.xz
linux-3eaded86ac3e7f00fb3eeb8162d89e9a34e42fb0.zip
Merge git://git.infradead.org/users/eparis/audit
Pull audit updates from Eric Paris: "Nothing amazing. Formatting, small bug fixes, couple of fixes where we didn't get records due to some old VFS changes, and a change to how we collect execve info..." Fixed conflict in fs/exec.c as per Eric and linux-next. * git://git.infradead.org/users/eparis/audit: (28 commits) audit: fix type of sessionid in audit_set_loginuid() audit: call audit_bprm() only once to add AUDIT_EXECVE information audit: move audit_aux_data_execve contents into audit_context union audit: remove unused envc member of audit_aux_data_execve audit: Kill the unused struct audit_aux_data_capset audit: do not reject all AUDIT_INODE filter types audit: suppress stock memalloc failure warnings since already managed audit: log the audit_names record type audit: add child record before the create to handle case where create fails audit: use given values in tty_audit enable api audit: use nlmsg_len() to get message payload length audit: use memset instead of trying to initialize field by field audit: fix info leak in AUDIT_GET requests audit: update AUDIT_INODE filter rule to comparator function audit: audit feature to set loginuid immutable audit: audit feature to only allow unsetting the loginuid audit: allow unsetting the loginuid (with priv) audit: remove CONFIG_AUDIT_LOGINUID_IMMUTABLE audit: loginuid functions coding style selinux: apply selinux checks on new audit message types ...
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/base.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 1485e38daaa3..03c8d747be48 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1151,10 +1151,16 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
goto out_free_page;
}
- kloginuid = make_kuid(file->f_cred->user_ns, loginuid);
- if (!uid_valid(kloginuid)) {
- length = -EINVAL;
- goto out_free_page;
+
+ /* is userspace tring to explicitly UNSET the loginuid? */
+ if (loginuid == AUDIT_UID_UNSET) {
+ kloginuid = INVALID_UID;
+ } else {
+ kloginuid = make_kuid(file->f_cred->user_ns, loginuid);
+ if (!uid_valid(kloginuid)) {
+ length = -EINVAL;
+ goto out_free_page;
+ }
}
length = audit_set_loginuid(kloginuid);