forked from mirrors/linux
861dc0b464
Move the umh sysctl registration to its own file, the array is already there. We do this to remove the clutter out of kernel/sysctl.c to avoid merge conflicts. This also lets the sysctls not be built at all now when CONFIG_SYSCTL is not enabled. This has a small penalty of 23 bytes but soon we'll be removing all the empty entries on sysctl arrays so just do this cleanup now: ./scripts/bloat-o-meter vmlinux.base vmlinux.1 add/remove: 2/0 grow/shrink: 0/1 up/down: 49/-26 (23) Function old new delta init_umh_sysctls - 33 +33 __pfx_init_umh_sysctls - 16 +16 sysctl_init_bases 111 85 -26 Total: Before=21256914, After=21256937, chg +0.00% Acked-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
#ifndef __LINUX_UMH_H__
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#define __LINUX_UMH_H__
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#include <linux/gfp.h>
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#include <linux/stddef.h>
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#include <linux/errno.h>
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#include <linux/compiler.h>
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#include <linux/workqueue.h>
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#include <linux/sysctl.h>
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struct cred;
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struct file;
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#define UMH_NO_WAIT 0x00 /* don't wait at all */
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#define UMH_WAIT_EXEC 0x01 /* wait for the exec, but not the process */
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#define UMH_WAIT_PROC 0x02 /* wait for the process to complete */
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#define UMH_KILLABLE 0x04 /* wait for EXEC/PROC killable */
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#define UMH_FREEZABLE 0x08 /* wait for EXEC/PROC freezable */
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struct subprocess_info {
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struct work_struct work;
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struct completion *complete;
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const char *path;
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char **argv;
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char **envp;
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int wait;
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int retval;
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int (*init)(struct subprocess_info *info, struct cred *new);
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void (*cleanup)(struct subprocess_info *info);
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void *data;
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} __randomize_layout;
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extern int
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call_usermodehelper(const char *path, char **argv, char **envp, int wait);
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extern struct subprocess_info *
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call_usermodehelper_setup(const char *path, char **argv, char **envp,
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gfp_t gfp_mask,
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int (*init)(struct subprocess_info *info, struct cred *new),
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void (*cleanup)(struct subprocess_info *), void *data);
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extern int
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call_usermodehelper_exec(struct subprocess_info *info, int wait);
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enum umh_disable_depth {
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UMH_ENABLED = 0,
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UMH_FREEZING,
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UMH_DISABLED,
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};
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extern int __usermodehelper_disable(enum umh_disable_depth depth);
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extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth);
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static inline int usermodehelper_disable(void)
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{
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return __usermodehelper_disable(UMH_DISABLED);
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}
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static inline void usermodehelper_enable(void)
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{
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__usermodehelper_set_disable_depth(UMH_ENABLED);
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}
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extern int usermodehelper_read_trylock(void);
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extern long usermodehelper_read_lock_wait(long timeout);
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extern void usermodehelper_read_unlock(void);
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#endif /* __LINUX_UMH_H__ */
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