diff options
Diffstat (limited to 'security/selinux')
| -rw-r--r-- | security/selinux/hooks.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 5f21a514f581..f71de5a64d0c 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -75,6 +75,7 @@ #include <linux/string.h> #include <linux/selinux.h> #include <linux/mutex.h> +#include <linux/posix-timers.h> #include "avc.h" #include "objsec.h" @@ -325,7 +326,7 @@ enum { Opt_rootcontext = 4, }; -static match_table_t tokens = { +static const match_table_t tokens = { {Opt_context, CONTEXT_STR "%s"}, {Opt_fscontext, FSCONTEXT_STR "%s"}, {Opt_defcontext, DEFCONTEXT_STR "%s"}, @@ -2123,26 +2124,27 @@ static inline void flush_unauthorized_files(struct files_struct *files) long j = -1; int drop_tty = 0; - mutex_lock(&tty_mutex); tty = get_current_tty(); if (tty) { file_list_lock(); - file = list_entry(tty->tty_files.next, typeof(*file), f_u.fu_list); - if (file) { + if (!list_empty(&tty->tty_files)) { + struct inode *inode; + /* Revalidate access to controlling tty. Use inode_has_perm on the tty inode directly rather than using file_has_perm, as this particular open file may belong to another process and we are only interested in the inode-based check here. */ - struct inode *inode = file->f_path.dentry->d_inode; + file = list_first_entry(&tty->tty_files, struct file, f_u.fu_list); + inode = file->f_path.dentry->d_inode; if (inode_has_perm(current, inode, FILE__READ | FILE__WRITE, NULL)) { drop_tty = 1; } } file_list_unlock(); + tty_kref_put(tty); } - mutex_unlock(&tty_mutex); /* Reset controlling tty. */ if (drop_tty) no_tty(); @@ -2326,13 +2328,7 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm) initrlim = init_task.signal->rlim+i; rlim->rlim_cur = min(rlim->rlim_max, initrlim->rlim_cur); } - if (current->signal->rlim[RLIMIT_CPU].rlim_cur != RLIM_INFINITY) { - /* - * This will cause RLIMIT_CPU calculations - * to be refigured. - */ - current->it_prof_expires = jiffies_to_cputime(1); - } + update_rlimit_cpu(rlim->rlim_cur); } /* Wake up the parent if it is waiting so that it can |