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| author | Jesper Juhl <juhl-lkml@dif.dk> | 2005-05-01 08:59:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-01 08:59:14 -0700 |
| commit | 7ed20e1ad521b5f5df61bf6559ae60738e393741 (patch) | |
| tree | 90931724e45eaedb3445314e8b94e78253642395 /kernel | |
| parent | e5bdd883a189243541e7a132385580703b049102 (diff) | |
| download | linux-7ed20e1ad521b5f5df61bf6559ae60738e393741.tar.gz linux-7ed20e1ad521b5f5df61bf6559ae60738e393741.tar.bz2 linux-7ed20e1ad521b5f5df61bf6559ae60738e393741.zip | |
[PATCH] convert that currently tests _NSIG directly to use valid_signal()
Convert most of the current code that uses _NSIG directly to instead use
valid_signal(). This avoids gcc -W warnings and off-by-one errors.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/exit.c | 5 | ||||
| -rw-r--r-- | kernel/futex.c | 3 | ||||
| -rw-r--r-- | kernel/ptrace.c | 3 | ||||
| -rw-r--r-- | kernel/signal.c | 9 | ||||
| -rw-r--r-- | kernel/sys.c | 3 |
5 files changed, 14 insertions, 9 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 93851bcd9584..eb8da36e13df 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -27,6 +27,7 @@ #include <linux/mempolicy.h> #include <linux/cpuset.h> #include <linux/syscalls.h> +#include <linux/signal.h> #include <asm/uaccess.h> #include <asm/unistd.h> @@ -277,7 +278,7 @@ void set_special_pids(pid_t session, pid_t pgrp) */ int allow_signal(int sig) { - if (sig < 1 || sig > _NSIG) + if (!valid_signal(sig) || sig < 1) return -EINVAL; spin_lock_irq(¤t->sighand->siglock); @@ -298,7 +299,7 @@ EXPORT_SYMBOL(allow_signal); int disallow_signal(int sig) { - if (sig < 1 || sig > _NSIG) + if (!valid_signal(sig) || sig < 1) return -EINVAL; spin_lock_irq(¤t->sighand->siglock); diff --git a/kernel/futex.c b/kernel/futex.c index 7b54a672d0ad..c7130f86106c 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -39,6 +39,7 @@ #include <linux/mount.h> #include <linux/pagemap.h> #include <linux/syscalls.h> +#include <linux/signal.h> #define FUTEX_HASHBITS (CONFIG_BASE_SMALL ? 4 : 8) @@ -654,7 +655,7 @@ static int futex_fd(unsigned long uaddr, int signal) int ret, err; ret = -EINVAL; - if (signal < 0 || signal > _NSIG) + if (!valid_signal(signal)) goto out; ret = get_unused_fd(); diff --git a/kernel/ptrace.c b/kernel/ptrace.c index f5cc1cec0fb4..8dcb8f6288bc 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -16,6 +16,7 @@ #include <linux/smp_lock.h> #include <linux/ptrace.h> #include <linux/security.h> +#include <linux/signal.h> #include <asm/pgtable.h> #include <asm/uaccess.h> @@ -166,7 +167,7 @@ bad: int ptrace_detach(struct task_struct *child, unsigned int data) { - if ((unsigned long) data > _NSIG) + if (!valid_signal(data)) return -EIO; /* Architecture-specific hardware disable .. */ diff --git a/kernel/signal.c b/kernel/signal.c index e6567d7f2b62..8f3debc77c5b 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -23,6 +23,7 @@ #include <linux/syscalls.h> #include <linux/ptrace.h> #include <linux/posix-timers.h> +#include <linux/signal.h> #include <asm/param.h> #include <asm/uaccess.h> #include <asm/unistd.h> @@ -646,7 +647,7 @@ static int check_kill_permission(int sig, struct siginfo *info, struct task_struct *t) { int error = -EINVAL; - if (sig < 0 || sig > _NSIG) + if (!valid_signal(sig)) return error; error = -EPERM; if ((!info || ((unsigned long)info != 1 && @@ -1245,7 +1246,7 @@ send_sig_info(int sig, struct siginfo *info, struct task_struct *p) * Make sure legacy kernel users don't send in bad values * (normal paths check this in check_kill_permission). */ - if (sig < 0 || sig > _NSIG) + if (!valid_signal(sig)) return -EINVAL; /* @@ -1520,7 +1521,7 @@ void do_notify_parent(struct task_struct *tsk, int sig) if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN) sig = 0; } - if (sig > 0 && sig <= _NSIG) + if (valid_signal(sig) && sig > 0) __group_send_sig_info(sig, &info, tsk->parent); __wake_up_parent(tsk, tsk->parent); spin_unlock_irqrestore(&psig->siglock, flags); @@ -2364,7 +2365,7 @@ do_sigaction(int sig, const struct k_sigaction *act, struct k_sigaction *oact) { struct k_sigaction *k; - if (sig < 1 || sig > _NSIG || (act && sig_kernel_only(sig))) + if (!valid_signal(sig) || sig < 1 || (act && sig_kernel_only(sig))) return -EINVAL; k = ¤t->sighand->action[sig-1]; diff --git a/kernel/sys.c b/kernel/sys.c index 7f43d6e62c7a..f64e97cabe25 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -25,6 +25,7 @@ #include <linux/dcookies.h> #include <linux/suspend.h> #include <linux/tty.h> +#include <linux/signal.h> #include <linux/compat.h> #include <linux/syscalls.h> @@ -1637,7 +1638,7 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, switch (option) { case PR_SET_PDEATHSIG: sig = arg2; - if (sig < 0 || sig > _NSIG) { + if (!valid_signal(sig)) { error = -EINVAL; break; } |