diff options
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 571bba8c8989..a95e3900dc1e 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -24,6 +24,11 @@ #include <linux/dcookies.h> #include <linux/suspend.h> +/* Don't include this - it breaks ia64's cond_syscall() implementation */ +#if 0 +#include <linux/syscalls.h> +#endif + #include <asm/uaccess.h> #include <asm/io.h> #include <asm/unistd.h> @@ -649,7 +654,7 @@ static int set_user(uid_t new_ruid, int dumpclear) return -EAGAIN; if (atomic_read(&new_user->processes) >= - current->rlim[RLIMIT_NPROC].rlim_cur && + current->signal->rlim[RLIMIT_NPROC].rlim_cur && new_user != &root_user) { free_uid(new_user); return -EAGAIN; @@ -1496,9 +1501,13 @@ asmlinkage long sys_getrlimit(unsigned int resource, struct rlimit __user *rlim) { if (resource >= RLIM_NLIMITS) return -EINVAL; - else - return copy_to_user(rlim, current->rlim + resource, sizeof(*rlim)) - ? -EFAULT : 0; + else { + struct rlimit value; + task_lock(current->group_leader); + value = current->signal->rlim[resource]; + task_unlock(current->group_leader); + return copy_to_user(rlim, &value, sizeof(*rlim)) ? -EFAULT : 0; + } } #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT @@ -1513,7 +1522,9 @@ asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *r if (resource >= RLIM_NLIMITS) return -EINVAL; - memcpy(&x, current->rlim + resource, sizeof(*rlim)); + task_lock(current->group_leader); + x = current->signal->rlim[resource]; + task_unlock(current->group_leader); if(x.rlim_cur > 0x7FFFFFFF) x.rlim_cur = 0x7FFFFFFF; if(x.rlim_max > 0x7FFFFFFF) @@ -1534,21 +1545,20 @@ asmlinkage long sys_setrlimit(unsigned int resource, struct rlimit __user *rlim) return -EFAULT; if (new_rlim.rlim_cur > new_rlim.rlim_max) return -EINVAL; - old_rlim = current->rlim + resource; - if (((new_rlim.rlim_cur > old_rlim->rlim_max) || - (new_rlim.rlim_max > old_rlim->rlim_max)) && + old_rlim = current->signal->rlim + resource; + if ((new_rlim.rlim_max > old_rlim->rlim_max) && !capable(CAP_SYS_RESOURCE)) return -EPERM; - if (resource == RLIMIT_NOFILE) { - if (new_rlim.rlim_cur > NR_OPEN || new_rlim.rlim_max > NR_OPEN) + if (resource == RLIMIT_NOFILE && new_rlim.rlim_max > NR_OPEN) return -EPERM; - } retval = security_task_setrlimit(resource, &new_rlim); if (retval) return retval; + task_lock(current->group_leader); *old_rlim = new_rlim; + task_unlock(current->group_leader); return 0; } |