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86313c488a
Rather than using a tri-state integer for the wait flag in call_usermodehelper_exec, define a proper enum, and use that. I've preserved the integer values so that any callers I've missed should still work OK. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Andi Kleen <ak@suse.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Joel Becker <joel.becker@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: David Howells <dhowells@redhat.com>
99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
#ifndef __LINUX_KMOD_H__
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#define __LINUX_KMOD_H__
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/*
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* include/linux/kmod.h
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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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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#define KMOD_PATH_LEN 256
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#ifdef CONFIG_KMOD
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/* modprobe exit status on success, -ve on error. Return value
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* usually useless though. */
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extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2)));
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#else
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static inline int request_module(const char * name, ...) { return -ENOSYS; }
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#endif
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#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x)))
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struct key;
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struct file;
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struct subprocess_info;
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/* Allocate a subprocess_info structure */
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struct subprocess_info *call_usermodehelper_setup(char *path,
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char **argv, char **envp);
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/* Set various pieces of state into the subprocess_info structure */
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void call_usermodehelper_setkeys(struct subprocess_info *info,
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struct key *session_keyring);
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int call_usermodehelper_stdinpipe(struct subprocess_info *sub_info,
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struct file **filp);
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void call_usermodehelper_setcleanup(struct subprocess_info *info,
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void (*cleanup)(char **argv, char **envp));
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enum umh_wait {
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UMH_NO_WAIT = -1, /* don't wait at all */
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UMH_WAIT_EXEC = 0, /* wait for the exec, but not the process */
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UMH_WAIT_PROC = 1, /* wait for the process to complete */
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};
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/* Actually execute the sub-process */
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int call_usermodehelper_exec(struct subprocess_info *info, enum umh_wait wait);
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/* Free the subprocess_info. This is only needed if you're not going
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to call call_usermodehelper_exec */
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void call_usermodehelper_freeinfo(struct subprocess_info *info);
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static inline int
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call_usermodehelper(char *path, char **argv, char **envp, enum umh_wait wait)
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{
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struct subprocess_info *info;
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info = call_usermodehelper_setup(path, argv, envp);
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if (info == NULL)
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return -ENOMEM;
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return call_usermodehelper_exec(info, wait);
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}
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static inline int
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call_usermodehelper_keys(char *path, char **argv, char **envp,
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struct key *session_keyring, enum umh_wait wait)
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{
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struct subprocess_info *info;
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info = call_usermodehelper_setup(path, argv, envp);
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if (info == NULL)
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return -ENOMEM;
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call_usermodehelper_setkeys(info, session_keyring);
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return call_usermodehelper_exec(info, wait);
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}
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extern void usermodehelper_init(void);
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struct file;
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extern int call_usermodehelper_pipe(char *path, char *argv[], char *envp[],
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struct file **filp);
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#endif /* __LINUX_KMOD_H__ */
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