diff options
| -rw-r--r-- | kernel/sys.c | 80 |
1 files changed, 30 insertions, 50 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index b88806c..2460581 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -607,11 +607,10 @@ static void kernel_restart_prepare(char *cmd) void kernel_restart(char *cmd) { kernel_restart_prepare(cmd); - if (!cmd) { + if (!cmd) printk(KERN_EMERG "Restarting system.\n"); - } else { + else printk(KERN_EMERG "Restarting system with command '%s'.\n", cmd); - } machine_restart(cmd); } EXPORT_SYMBOL_GPL(kernel_restart); @@ -627,9 +626,8 @@ static void kernel_kexec(void) #ifdef CONFIG_KEXEC struct kimage *image; image = xchg(&kexec_image, NULL); - if (!image) { + if (!image) return; - } kernel_restart_prepare(NULL); printk(KERN_EMERG "Starting new kernel\n"); machine_shutdown(); @@ -823,12 +821,10 @@ asmlinkage long sys_setregid(gid_t rgid, gid_t egid) (current->sgid == egid) || capable(CAP_SETGID)) new_egid = egid; - else { + else return -EPERM; - } } - if (new_egid != old_egid) - { + if (new_egid != old_egid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -857,19 +853,14 @@ asmlinkage long sys_setgid(gid_t gid) if (retval) return retval; - if (capable(CAP_SETGID)) - { - if(old_egid != gid) - { + if (capable(CAP_SETGID)) { + if (old_egid != gid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } current->gid = current->egid = current->sgid = current->fsgid = gid; - } - else if ((gid == current->gid) || (gid == current->sgid)) - { - if(old_egid != gid) - { + } else if ((gid == current->gid) || (gid == current->sgid)) { + if (old_egid != gid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -900,8 +891,7 @@ static int set_user(uid_t new_ruid, int dumpclear) switch_uid(new_user); - if(dumpclear) - { + if (dumpclear) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -957,8 +947,7 @@ asmlinkage long sys_setreuid(uid_t ruid, uid_t euid) if (new_ruid != old_ruid && set_user(new_ruid, new_euid != old_euid) < 0) return -EAGAIN; - if (new_euid != old_euid) - { + if (new_euid != old_euid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -1008,8 +997,7 @@ asmlinkage long sys_setuid(uid_t uid) } else if ((uid != current->uid) && (uid != new_suid)) return -EPERM; - if (old_euid != uid) - { + if (old_euid != uid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -1054,8 +1042,7 @@ asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid) return -EAGAIN; } if (euid != (uid_t) -1) { - if (euid != current->euid) - { + if (euid != current->euid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -1105,8 +1092,7 @@ asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid) return -EPERM; } if (egid != (gid_t) -1) { - if (egid != current->egid) - { + if (egid != current->egid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -1151,10 +1137,8 @@ asmlinkage long sys_setfsuid(uid_t uid) if (uid == current->uid || uid == current->euid || uid == current->suid || uid == current->fsuid || - capable(CAP_SETUID)) - { - if (uid != old_fsuid) - { + capable(CAP_SETUID)) { + if (uid != old_fsuid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -1182,10 +1166,8 @@ asmlinkage long sys_setfsgid(gid_t gid) if (gid == current->gid || gid == current->egid || gid == current->sgid || gid == current->fsgid || - capable(CAP_SETGID)) - { - if (gid != old_fsgid) - { + capable(CAP_SETGID)) { + if (gid != old_fsgid) { current->mm->dumpable = suid_dumpable; smp_wmb(); } @@ -1321,9 +1303,9 @@ out: asmlinkage long sys_getpgid(pid_t pid) { - if (!pid) { + if (!pid) return process_group(current); - } else { + else { int retval; struct task_struct *p; @@ -1353,9 +1335,9 @@ asmlinkage long sys_getpgrp(void) asmlinkage long sys_getsid(pid_t pid) { - if (!pid) { + if (!pid) return current->signal->session; - } else { + else { int retval; struct task_struct *p; @@ -1363,7 +1345,7 @@ asmlinkage long sys_getsid(pid_t pid) p = find_task_by_pid(pid); retval = -ESRCH; - if(p) { + if (p) { retval = security_task_getsid(p); if (!retval) retval = p->signal->session; @@ -1431,9 +1413,9 @@ struct group_info *groups_alloc(int gidsetsize) group_info->nblocks = nblocks; atomic_set(&group_info->usage, 1); - if (gidsetsize <= NGROUPS_SMALL) { + if (gidsetsize <= NGROUPS_SMALL) group_info->blocks[0] = group_info->small_block; - } else { + else { for (i = 0; i < nblocks; i++) { gid_t *b; b = (void *)__get_free_page(GFP_USER); @@ -1489,7 +1471,7 @@ static int groups_to_user(gid_t __user *grouplist, /* fill a group_info from a user-space array - it must be allocated already */ static int groups_from_user(struct group_info *group_info, gid_t __user *grouplist) - { +{ int i; int count = group_info->ngroups; @@ -1647,9 +1629,8 @@ asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist) int in_group_p(gid_t grp) { int retval = 1; - if (grp != current->fsgid) { + if (grp != current->fsgid) retval = groups_search(current->group_info, grp); - } return retval; } @@ -1658,9 +1639,8 @@ EXPORT_SYMBOL(in_group_p); int in_egroup_p(gid_t grp) { int retval = 1; - if (grp != current->egid) { + if (grp != current->egid) retval = groups_search(current->group_info, grp); - } return retval; } @@ -1775,9 +1755,9 @@ asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *r task_lock(current->group_leader); x = current->signal->rlim[resource]; task_unlock(current->group_leader); - if(x.rlim_cur > 0x7FFFFFFF) + if (x.rlim_cur > 0x7FFFFFFF) x.rlim_cur = 0x7FFFFFFF; - if(x.rlim_max > 0x7FFFFFFF) + if (x.rlim_max > 0x7FFFFFFF) x.rlim_max = 0x7FFFFFFF; return copy_to_user(rlim, &x, sizeof(x))?-EFAULT:0; } |