diff options
Diffstat (limited to 'kernel/kmod.c')
| -rw-r--r-- | kernel/kmod.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/kernel/kmod.c b/kernel/kmod.c index 21a0f8e99102..1f596e4de306 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -478,6 +478,7 @@ static void helper_unlock(void) * structure. This should be passed to call_usermodehelper_exec to * exec the process and free the structure. */ +static struct subprocess_info *call_usermodehelper_setup(char *path, char **argv, char **envp, gfp_t gfp_mask) { @@ -493,7 +494,6 @@ struct subprocess_info *call_usermodehelper_setup(char *path, char **argv, out: return sub_info; } -EXPORT_SYMBOL(call_usermodehelper_setup); /** * call_usermodehelper_setfns - set a cleanup/init function @@ -511,6 +511,7 @@ EXPORT_SYMBOL(call_usermodehelper_setup); * Function must be runnable in either a process context or the * context in which call_usermodehelper_exec is called. */ +static void call_usermodehelper_setfns(struct subprocess_info *info, int (*init)(struct subprocess_info *info, struct cred *new), void (*cleanup)(struct subprocess_info *info), @@ -520,7 +521,6 @@ void call_usermodehelper_setfns(struct subprocess_info *info, info->init = init; info->data = data; } -EXPORT_SYMBOL(call_usermodehelper_setfns); /** * call_usermodehelper_exec - start a usermode application @@ -534,6 +534,7 @@ EXPORT_SYMBOL(call_usermodehelper_setfns); * asynchronously if wait is not set, and runs as a child of keventd. * (ie. it runs with full root capabilities). */ +static int call_usermodehelper_exec(struct subprocess_info *sub_info, int wait) { DECLARE_COMPLETION_ONSTACK(done); @@ -575,7 +576,25 @@ unlock: helper_unlock(); return retval; } -EXPORT_SYMBOL(call_usermodehelper_exec); + +int call_usermodehelper_fns( + char *path, char **argv, char **envp, int wait, + int (*init)(struct subprocess_info *info, struct cred *new), + void (*cleanup)(struct subprocess_info *), void *data) +{ + struct subprocess_info *info; + gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL; + + info = call_usermodehelper_setup(path, argv, envp, gfp_mask); + + if (info == NULL) + return -ENOMEM; + + call_usermodehelper_setfns(info, init, cleanup, data); + + return call_usermodehelper_exec(info, wait); +} +EXPORT_SYMBOL(call_usermodehelper_fns); static int proc_cap_handler(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) |