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| author | Jiri Slaby <jirislaby@gmail.com> | 2009-08-26 18:41:16 +0200 |
|---|---|---|
| committer | Jiri Slaby <jirislaby@gmail.com> | 2010-07-16 09:48:45 +0200 |
| commit | 8fd00b4d7014b00448eb33cf0590815304769798 (patch) | |
| tree | f97cc5b4401dd038e539dae7ad66066383012866 | |
| parent | 2f7989efd4398d92b8adffce2e07dd043a0895fe (diff) | |
| download | linux-8fd00b4d7014b00448eb33cf0590815304769798.tar.gz linux-8fd00b4d7014b00448eb33cf0590815304769798.tar.bz2 linux-8fd00b4d7014b00448eb33cf0590815304769798.zip | |
rlimits: security, add task_struct to setrlimit
Add task_struct to task_setrlimit of security_operations to be able to set
rlimit of task other than current.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Eric Paris <eparis@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
| -rw-r--r-- | include/linux/security.h | 9 | ||||
| -rw-r--r-- | kernel/sys.c | 2 | ||||
| -rw-r--r-- | security/capability.c | 3 | ||||
| -rw-r--r-- | security/security.c | 5 | ||||
| -rw-r--r-- | security/selinux/hooks.c | 7 |
5 files changed, 16 insertions, 10 deletions
diff --git a/include/linux/security.h b/include/linux/security.h index 0c8819170463..1a3eb5ff4357 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1501,7 +1501,8 @@ struct security_operations { int (*task_setnice) (struct task_struct *p, int nice); int (*task_setioprio) (struct task_struct *p, int ioprio); int (*task_getioprio) (struct task_struct *p); - int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim); + int (*task_setrlimit) (struct task_struct *p, unsigned int resource, + struct rlimit *new_rlim); int (*task_setscheduler) (struct task_struct *p, int policy, struct sched_param *lp); int (*task_getscheduler) (struct task_struct *p); @@ -1751,7 +1752,8 @@ void security_task_getsecid(struct task_struct *p, u32 *secid); int security_task_setnice(struct task_struct *p, int nice); int security_task_setioprio(struct task_struct *p, int ioprio); int security_task_getioprio(struct task_struct *p); -int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim); +int security_task_setrlimit(struct task_struct *p, unsigned int resource, + struct rlimit *new_rlim); int security_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp); int security_task_getscheduler(struct task_struct *p); @@ -2313,7 +2315,8 @@ static inline int security_task_getioprio(struct task_struct *p) return 0; } -static inline int security_task_setrlimit(unsigned int resource, +static inline int security_task_setrlimit(struct task_struct *p, + unsigned int resource, struct rlimit *new_rlim) { return 0; diff --git a/kernel/sys.c b/kernel/sys.c index e83ddbbaf89d..1ba4522689d4 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1290,7 +1290,7 @@ SYSCALL_DEFINE2(setrlimit, unsigned int, resource, struct rlimit __user *, rlim) if (resource == RLIMIT_NOFILE && new_rlim.rlim_max > sysctl_nr_open) return -EPERM; - retval = security_task_setrlimit(resource, &new_rlim); + retval = security_task_setrlimit(current, resource, &new_rlim); if (retval) return retval; diff --git a/security/capability.c b/security/capability.c index 8168e3ecd5bf..7e468263f2de 100644 --- a/security/capability.c +++ b/security/capability.c @@ -412,7 +412,8 @@ static int cap_task_getioprio(struct task_struct *p) return 0; } -static int cap_task_setrlimit(unsigned int resource, struct rlimit *new_rlim) +static int cap_task_setrlimit(struct task_struct *p, unsigned int resource, + struct rlimit *new_rlim) { return 0; } diff --git a/security/security.c b/security/security.c index 351942a4ca0e..aa510609a955 100644 --- a/security/security.c +++ b/security/security.c @@ -769,9 +769,10 @@ int security_task_getioprio(struct task_struct *p) return security_ops->task_getioprio(p); } -int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim) +int security_task_setrlimit(struct task_struct *p, unsigned int resource, + struct rlimit *new_rlim) { - return security_ops->task_setrlimit(resource, new_rlim); + return security_ops->task_setrlimit(p, resource, new_rlim); } int security_task_setscheduler(struct task_struct *p, diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 5c9f25ba1c95..e3ce6b4127cc 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3371,16 +3371,17 @@ static int selinux_task_getioprio(struct task_struct *p) return current_has_perm(p, PROCESS__GETSCHED); } -static int selinux_task_setrlimit(unsigned int resource, struct rlimit *new_rlim) +static int selinux_task_setrlimit(struct task_struct *p, unsigned int resource, + struct rlimit *new_rlim) { - struct rlimit *old_rlim = current->signal->rlim + resource; + struct rlimit *old_rlim = p->signal->rlim + resource; /* Control the ability to change the hard limit (whether lowering or raising it), so that the hard limit can later be used as a safe reset point for the soft limit upon context transitions. See selinux_bprm_committing_creds. */ if (old_rlim->rlim_max != new_rlim->rlim_max) - return current_has_perm(current, PROCESS__SETRLIMIT); + return current_has_perm(p, PROCESS__SETRLIMIT); return 0; } |