signal: Remove the signal number and task parameters from force_sig_info
force_sig_info always delivers to the current task and the signal parameter always matches info.si_signo. So remove those parameters to make it a simpler less error prone interface, and to make it clear that none of the callers are doing anything clever. This guarantees that force_sig_info will not grow any new buggy callers that attempt to call force_sig on a non-current task, or that pass an signal number that does not match info.si_signo. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
parent
59c0e696a6
commit
a89e9b8abf
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@ -355,7 +355,7 @@ static inline void user_single_step_report(struct pt_regs *regs)
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info.si_code = SI_USER;
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info.si_code = SI_USER;
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info.si_pid = 0;
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info.si_pid = 0;
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info.si_uid = 0;
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info.si_uid = 0;
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force_sig_info(info.si_signo, &info, current);
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force_sig_info(&info);
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}
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}
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#endif
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#endif
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@ -329,7 +329,7 @@ int force_sig_ptrace_errno_trap(int errno, void __user *addr);
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extern int send_sig_info(int, struct kernel_siginfo *, struct task_struct *);
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extern int send_sig_info(int, struct kernel_siginfo *, struct task_struct *);
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extern void force_sigsegv(int sig);
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extern void force_sigsegv(int sig);
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extern int force_sig_info(int, struct kernel_siginfo *, struct task_struct *);
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extern int force_sig_info(struct kernel_siginfo *);
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extern int __kill_pgrp_info(int sig, struct kernel_siginfo *info, struct pid *pgrp);
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extern int __kill_pgrp_info(int sig, struct kernel_siginfo *info, struct pid *pgrp);
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extern int kill_pid_info(int sig, struct kernel_siginfo *info, struct pid *pid);
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extern int kill_pid_info(int sig, struct kernel_siginfo *info, struct pid *pid);
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extern int kill_pid_usb_asyncio(int sig, int errno, sigval_t addr, struct pid *,
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extern int kill_pid_usb_asyncio(int sig, int errno, sigval_t addr, struct pid *,
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@ -609,7 +609,7 @@ static void seccomp_send_sigsys(int syscall, int reason)
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{
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{
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struct kernel_siginfo info;
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struct kernel_siginfo info;
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seccomp_init_siginfo(&info, syscall, reason);
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seccomp_init_siginfo(&info, syscall, reason);
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force_sig_info(SIGSYS, &info, current);
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force_sig_info(&info);
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}
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}
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#endif /* CONFIG_SECCOMP_FILTER */
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#endif /* CONFIG_SECCOMP_FILTER */
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@ -1325,9 +1325,9 @@ force_sig_info_to_task(struct kernel_siginfo *info, struct task_struct *t)
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return ret;
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return ret;
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}
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}
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int force_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *t)
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int force_sig_info(struct kernel_siginfo *info)
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{
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{
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return force_sig_info_to_task(info, t);
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return force_sig_info_to_task(info, current);
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}
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}
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/*
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/*
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@ -1619,7 +1619,7 @@ void force_sig(int sig)
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info.si_code = SI_KERNEL;
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info.si_code = SI_KERNEL;
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info.si_pid = 0;
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info.si_pid = 0;
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info.si_uid = 0;
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info.si_uid = 0;
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force_sig_info(info.si_signo, &info, current);
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force_sig_info(&info);
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}
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}
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EXPORT_SYMBOL(force_sig);
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EXPORT_SYMBOL(force_sig);
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@ -1708,7 +1708,7 @@ int force_sig_mceerr(int code, void __user *addr, short lsb)
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info.si_code = code;
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info.si_code = code;
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info.si_addr = addr;
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info.si_addr = addr;
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info.si_addr_lsb = lsb;
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info.si_addr_lsb = lsb;
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return force_sig_info(info.si_signo, &info, current);
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return force_sig_info(&info);
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}
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}
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int send_sig_mceerr(int code, void __user *addr, short lsb, struct task_struct *t)
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int send_sig_mceerr(int code, void __user *addr, short lsb, struct task_struct *t)
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@ -1737,7 +1737,7 @@ int force_sig_bnderr(void __user *addr, void __user *lower, void __user *upper)
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info.si_addr = addr;
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info.si_addr = addr;
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info.si_lower = lower;
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info.si_lower = lower;
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info.si_upper = upper;
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info.si_upper = upper;
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return force_sig_info(info.si_signo, &info, current);
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return force_sig_info(&info);
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}
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}
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#ifdef SEGV_PKUERR
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#ifdef SEGV_PKUERR
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@ -1751,7 +1751,7 @@ int force_sig_pkuerr(void __user *addr, u32 pkey)
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info.si_code = SEGV_PKUERR;
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info.si_code = SEGV_PKUERR;
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info.si_addr = addr;
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info.si_addr = addr;
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info.si_pkey = pkey;
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info.si_pkey = pkey;
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return force_sig_info(info.si_signo, &info, current);
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return force_sig_info(&info);
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}
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}
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#endif
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#endif
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@ -1767,7 +1767,7 @@ int force_sig_ptrace_errno_trap(int errno, void __user *addr)
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info.si_errno = errno;
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info.si_errno = errno;
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info.si_code = TRAP_HWBKPT;
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info.si_code = TRAP_HWBKPT;
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info.si_addr = addr;
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info.si_addr = addr;
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return force_sig_info(info.si_signo, &info, current);
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return force_sig_info(&info);
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}
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}
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int kill_pgrp(struct pid *pid, int sig, int priv)
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int kill_pgrp(struct pid *pid, int sig, int priv)
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