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Bury the conditionals from kernel_thread/kernel_execve series

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All architectures have
	CONFIG_GENERIC_KERNEL_THREAD
	CONFIG_GENERIC_KERNEL_EXECVE
	__ARCH_WANT_SYS_EXECVE
None of them have __ARCH_WANT_KERNEL_EXECVE and there are only two callers
of kernel_execve() (which is a trivial wrapper for do_execve() now) left.
Kill the conditionals and make both callers use do_execve().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-12-14 12:44:11 -05:00
commit ae903caae2
63 changed files with 6 additions and 131 deletions
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4
include/linux/binfmts.h
View file

@ -121,8 +121,4 @@ extern void install_exec_creds(struct linux_binprm *bprm);
extern void set_binfmt(struct linux_binfmt *new);
extern void free_bprm(struct linux_binprm *);
#ifdef __ARCH_WANT_KERNEL_EXECVE
extern void ret_from_kernel_execve(struct pt_regs *normal) __noreturn;
#endif
#endif /* _LINUX_BINFMTS_H */

2
include/linux/sched.h
View file

@ -2291,9 +2291,7 @@ extern int do_execve(const char *,
const char __user * const __user *);
extern long do_fork(unsigned long, unsigned long, unsigned long, int __user *, int __user *);
struct task_struct *fork_idle(int);
#ifdef CONFIG_GENERIC_KERNEL_THREAD
extern pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
#endif
extern void set_task_comm(struct task_struct *tsk, char *from);
extern char *get_task_comm(char *to, struct task_struct *tsk);

9
include/linux/syscalls.h
View file

@ -827,15 +827,6 @@ asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
const char __user *pathname);
asmlinkage long sys_syncfs(int fd);
#ifndef CONFIG_GENERIC_KERNEL_EXECVE
int kernel_execve(const char *filename, const char *const argv[], const char *const envp[]);
#else
#define kernel_execve(filename, argv, envp) \
do_execve(filename, \
(const char __user *const __user *)argv, \
(const char __user *const __user *)envp)
#endif
asmlinkage long sys_fork(void);
asmlinkage long sys_vfork(void);
#ifdef CONFIG_CLONE_BACKWARDS