From d635711daa98be86d4c7fd01499c34f566b54ccb Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Fri, 10 Jun 2016 05:30:17 -0300 Subject: Linux-libre 4.6.2-gnu --- fs/autofs4/dev-ioctl.c | 57 +++++++++++++++++++++++++++----------------------- 1 file changed, 31 insertions(+), 26 deletions(-) (limited to 'fs/autofs4/dev-ioctl.c') diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index ac7d921ed..c7fcc7438 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -72,13 +72,13 @@ static int check_dev_ioctl_version(int cmd, struct autofs_dev_ioctl *param) { int err = 0; - if ((AUTOFS_DEV_IOCTL_VERSION_MAJOR != param->ver_major) || - (AUTOFS_DEV_IOCTL_VERSION_MINOR < param->ver_minor)) { - AUTOFS_WARN("ioctl control interface version mismatch: " - "kernel(%u.%u), user(%u.%u), cmd(%d)", - AUTOFS_DEV_IOCTL_VERSION_MAJOR, - AUTOFS_DEV_IOCTL_VERSION_MINOR, - param->ver_major, param->ver_minor, cmd); + if ((param->ver_major != AUTOFS_DEV_IOCTL_VERSION_MAJOR) || + (param->ver_minor > AUTOFS_DEV_IOCTL_VERSION_MINOR)) { + pr_warn("ioctl control interface version mismatch: " + "kernel(%u.%u), user(%u.%u), cmd(%d)\n", + AUTOFS_DEV_IOCTL_VERSION_MAJOR, + AUTOFS_DEV_IOCTL_VERSION_MINOR, + param->ver_major, param->ver_minor, cmd); err = -EINVAL; } @@ -93,7 +93,8 @@ static int check_dev_ioctl_version(int cmd, struct autofs_dev_ioctl *param) * Copy parameter control struct, including a possible path allocated * at the end of the struct. */ -static struct autofs_dev_ioctl *copy_dev_ioctl(struct autofs_dev_ioctl __user *in) +static struct autofs_dev_ioctl * + copy_dev_ioctl(struct autofs_dev_ioctl __user *in) { struct autofs_dev_ioctl tmp, *res; @@ -116,7 +117,6 @@ static struct autofs_dev_ioctl *copy_dev_ioctl(struct autofs_dev_ioctl __user *i static inline void free_dev_ioctl(struct autofs_dev_ioctl *param) { kfree(param); - return; } /* @@ -129,24 +129,24 @@ static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param) err = check_dev_ioctl_version(cmd, param); if (err) { - AUTOFS_WARN("invalid device control module version " - "supplied for cmd(0x%08x)", cmd); + pr_warn("invalid device control module version " + "supplied for cmd(0x%08x)\n", cmd); goto out; } if (param->size > sizeof(*param)) { err = invalid_str(param->path, param->size - sizeof(*param)); if (err) { - AUTOFS_WARN( - "path string terminator missing for cmd(0x%08x)", + pr_warn( + "path string terminator missing for cmd(0x%08x)\n", cmd); goto out; } err = check_name(param->path); if (err) { - AUTOFS_WARN("invalid path supplied for cmd(0x%08x)", - cmd); + pr_warn("invalid path supplied for cmd(0x%08x)\n", + cmd); goto out; } } @@ -197,7 +197,9 @@ static int find_autofs_mount(const char *pathname, void *data) { struct path path; - int err = kern_path_mountpoint(AT_FDCWD, pathname, &path, 0); + int err; + + err = kern_path_mountpoint(AT_FDCWD, pathname, &path, 0); if (err) return err; err = -ENOENT; @@ -225,6 +227,7 @@ static int test_by_dev(struct path *path, void *p) static int test_by_type(struct path *path, void *p) { struct autofs_info *ino = autofs4_dentry_ino(path->dentry); + return ino && ino->sbi->type & *(unsigned *)p; } @@ -370,7 +373,7 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp, new_pid = get_task_pid(current, PIDTYPE_PGID); if (ns_of_pid(new_pid) != ns_of_pid(sbi->oz_pgrp)) { - AUTOFS_WARN("Not allowed to change PID namespace"); + pr_warn("not allowed to change PID namespace\n"); err = -EINVAL; goto out; } @@ -456,8 +459,10 @@ static int autofs_dev_ioctl_requester(struct file *fp, err = 0; autofs4_expire_wait(path.dentry, 0); spin_lock(&sbi->fs_lock); - param->requester.uid = from_kuid_munged(current_user_ns(), ino->uid); - param->requester.gid = from_kgid_munged(current_user_ns(), ino->gid); + param->requester.uid = + from_kuid_munged(current_user_ns(), ino->uid); + param->requester.gid = + from_kgid_munged(current_user_ns(), ino->gid); spin_unlock(&sbi->fs_lock); } path_put(&path); @@ -619,7 +624,8 @@ static ioctl_fn lookup_dev_ioctl(unsigned int cmd) } /* ioctl dispatcher */ -static int _autofs_dev_ioctl(unsigned int command, struct autofs_dev_ioctl __user *user) +static int _autofs_dev_ioctl(unsigned int command, + struct autofs_dev_ioctl __user *user) { struct autofs_dev_ioctl *param; struct file *fp; @@ -655,7 +661,7 @@ static int _autofs_dev_ioctl(unsigned int command, struct autofs_dev_ioctl __use fn = lookup_dev_ioctl(cmd); if (!fn) { - AUTOFS_WARN("unknown command 0x%08x", command); + pr_warn("unknown command 0x%08x\n", command); return -ENOTTY; } @@ -711,6 +717,7 @@ out: static long autofs_dev_ioctl(struct file *file, uint command, ulong u) { int err; + err = _autofs_dev_ioctl(command, (struct autofs_dev_ioctl __user *) u); return (long) err; } @@ -733,8 +740,8 @@ static const struct file_operations _dev_ioctl_fops = { static struct miscdevice _autofs_dev_ioctl_misc = { .minor = AUTOFS_MINOR, - .name = AUTOFS_DEVICE_NAME, - .fops = &_dev_ioctl_fops + .name = AUTOFS_DEVICE_NAME, + .fops = &_dev_ioctl_fops }; MODULE_ALIAS_MISCDEV(AUTOFS_MINOR); @@ -747,7 +754,7 @@ int __init autofs_dev_ioctl_init(void) r = misc_register(&_autofs_dev_ioctl_misc); if (r) { - AUTOFS_ERROR("misc_register failed for control device"); + pr_err("misc_register failed for control device\n"); return r; } @@ -757,6 +764,4 @@ int __init autofs_dev_ioctl_init(void) void autofs_dev_ioctl_exit(void) { misc_deregister(&_autofs_dev_ioctl_misc); - return; } - -- cgit v1.2.3-54-g00ecf