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autofs4: improve parameter usage

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The parameter usage in the device node ioctl code uses arg1 and arg2 as
parameter names.  This patch redefines the parameter names to reflect what
they actually are in an effort to make the code more readable.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ian Kent
2009-01-06 14:42:06 -08:00
committed by Linus Torvalds
parent f70f582f00
commit 730c9eeca9
2 changed files with 100 additions and 29 deletions
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54
fs/autofs4/dev-ioctl.c
View File

@@ -180,7 +180,7 @@ static int autofs_dev_ioctl_protover(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
param->arg1 = sbi->version;
param->protover.version = sbi->version;
return 0;
}
@@ -189,7 +189,7 @@ static int autofs_dev_ioctl_protosubver(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
param->arg1 = sbi->sub_version;
param->protosubver.sub_version = sbi->sub_version;
return 0;
}
@@ -335,13 +335,13 @@ static int autofs_dev_ioctl_openmount(struct file *fp,
int err, fd;
/* param->path has already been checked */
if (!param->arg1)
if (!param->openmount.devid)
return -EINVAL;
param->ioctlfd = -1;
path = param->path;
devid = param->arg1;
devid = param->openmount.devid;
err = 0;
fd = autofs_dev_ioctl_open_mountpoint(path, devid);
@@ -373,7 +373,7 @@ static int autofs_dev_ioctl_ready(struct file *fp,
{
autofs_wqt_t token;
token = (autofs_wqt_t) param->arg1;
token = (autofs_wqt_t) param->ready.token;
return autofs4_wait_release(sbi, token, 0);
}
@@ -388,8 +388,8 @@ static int autofs_dev_ioctl_fail(struct file *fp,
autofs_wqt_t token;
int status;
token = (autofs_wqt_t) param->arg1;
status = param->arg2 ? param->arg2 : -ENOENT;
token = (autofs_wqt_t) param->fail.token;
status = param->fail.status ? param->fail.status : -ENOENT;
return autofs4_wait_release(sbi, token, status);
}
@@ -412,10 +412,10 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp,
int pipefd;
int err = 0;
if (param->arg1 == -1)
if (param->setpipefd.pipefd == -1)
return -EINVAL;
pipefd = param->arg1;
pipefd = param->setpipefd.pipefd;
mutex_lock(&sbi->wq_mutex);
if (!sbi->catatonic) {
@@ -457,8 +457,8 @@ static int autofs_dev_ioctl_timeout(struct file *fp,
{
unsigned long timeout;
timeout = param->arg1;
param->arg1 = sbi->exp_timeout / HZ;
timeout = param->timeout.timeout;
param->timeout.timeout = sbi->exp_timeout / HZ;
sbi->exp_timeout = timeout * HZ;
return 0;
}
@@ -489,7 +489,7 @@ static int autofs_dev_ioctl_requester(struct file *fp,
path = param->path;
devid = sbi->sb->s_dev;
param->arg1 = param->arg2 = -1;
param->requester.uid = param->requester.gid = -1;
/* Get nameidata of the parent directory */
err = path_lookup(path, LOOKUP_PARENT, &nd);
@@ -505,8 +505,8 @@ static int autofs_dev_ioctl_requester(struct file *fp,
err = 0;
autofs4_expire_wait(nd.path.dentry);
spin_lock(&sbi->fs_lock);
param->arg1 = ino->uid;
param->arg2 = ino->gid;
param->requester.uid = ino->uid;
param->requester.gid = ino->gid;
spin_unlock(&sbi->fs_lock);
}
@@ -529,7 +529,7 @@ static int autofs_dev_ioctl_expire(struct file *fp,
int err = -EAGAIN;
int how;
how = param->arg1;
how = param->expire.how;
mnt = fp->f_path.mnt;
if (sbi->type & AUTOFS_TYPE_TRIGGER)
@@ -565,9 +565,9 @@ static int autofs_dev_ioctl_askumount(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
param->arg1 = 0;
param->askumount.may_umount = 0;
if (may_umount(fp->f_path.mnt))
param->arg1 = 1;
param->askumount.may_umount = 1;
return 0;
}
@@ -600,6 +600,7 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
struct nameidata nd;
const char *path;
unsigned int type;
unsigned int devid, magic;
int err = -ENOENT;
if (param->size <= sizeof(*param)) {
@@ -608,10 +609,10 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
}
path = param->path;
type = param->arg1;
type = param->ismountpoint.in.type;
param->arg1 = 0;
param->arg2 = 0;
param->ismountpoint.out.devid = devid = 0;
param->ismountpoint.out.magic = magic = 0;
if (!fp || param->ioctlfd == -1) {
if (type == AUTOFS_TYPE_ANY) {
@@ -622,7 +623,7 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
goto out;
sb = nd.path.dentry->d_sb;
param->arg1 = new_encode_dev(sb->s_dev);
devid = new_encode_dev(sb->s_dev);
} else {
struct autofs_info *ino;
@@ -635,14 +636,14 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
goto out_release;
ino = autofs4_dentry_ino(nd.path.dentry);
param->arg1 = autofs4_get_dev(ino->sbi);
devid = autofs4_get_dev(ino->sbi);
}
err = 0;
if (nd.path.dentry->d_inode &&
nd.path.mnt->mnt_root == nd.path.dentry) {
err = 1;
param->arg2 = nd.path.dentry->d_inode->i_sb->s_magic;
magic = nd.path.dentry->d_inode->i_sb->s_magic;
}
} else {
dev_t devid = new_encode_dev(sbi->sb->s_dev);
@@ -655,18 +656,21 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
if (err)
goto out_release;
param->arg1 = autofs4_get_dev(sbi);
devid = autofs4_get_dev(sbi);
err = have_submounts(nd.path.dentry);
if (nd.path.mnt->mnt_mountpoint != nd.path.mnt->mnt_root) {
if (follow_down(&nd.path.mnt, &nd.path.dentry)) {
struct inode *inode = nd.path.dentry->d_inode;
param->arg2 = inode->i_sb->s_magic;
magic = inode->i_sb->s_magic;
}
}
}
param->ismountpoint.out.devid = devid;
param->ismountpoint.out.magic = magic;
out_release:
path_put(&nd.path);
out: