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atm: switch to proc_create_seq_private

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And remove proc boilerplate code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2018-04-18 06:09:21 +02:00
parent ce9fe43875
commit a2d03aac51
1 changed files with 13 additions and 59 deletions
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72
net/atm/proc.c
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@ -68,7 +68,6 @@ static void atm_dev_info(struct seq_file *seq, const struct atm_dev *dev)
struct vcc_state {
int bucket;
struct sock *sk;
int family;
};
static inline int compare_family(struct sock *sk, int family)
@ -106,25 +105,15 @@ static int __vcc_walk(struct sock **sock, int family, int *bucket, loff_t l)
return (l < 0);
}
static inline void *vcc_walk(struct vcc_state *state, loff_t l)
static inline void *vcc_walk(struct seq_file *seq, loff_t l)
{
return __vcc_walk(&state->sk, state->family, &state->bucket, l) ?
struct vcc_state *state = seq->private;
int family = (uintptr_t)(PDE_DATA(file_inode(seq->file)));
return __vcc_walk(&state->sk, family, &state->bucket, l) ?
state : NULL;
}
static int __vcc_seq_open(struct inode *inode, struct file *file,
int family, const struct seq_operations *ops)
{
struct vcc_state *state;
state = __seq_open_private(file, ops, sizeof(*state));
if (state == NULL)
return -ENOMEM;
state->family = family;
return 0;
}
static void *vcc_seq_start(struct seq_file *seq, loff_t *pos)
__acquires(vcc_sklist_lock)
{
@ -133,7 +122,7 @@ static void *vcc_seq_start(struct seq_file *seq, loff_t *pos)
read_lock(&vcc_sklist_lock);
state->sk = SEQ_START_TOKEN;
return left ? vcc_walk(state, left) : SEQ_START_TOKEN;
return left ? vcc_walk(seq, left) : SEQ_START_TOKEN;
}
static void vcc_seq_stop(struct seq_file *seq, void *v)
@ -144,9 +133,7 @@ static void vcc_seq_stop(struct seq_file *seq, void *v)
static void *vcc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct vcc_state *state = seq->private;
v = vcc_walk(state, 1);
v = vcc_walk(seq, 1);
*pos += !!PTR_ERR(v);
return v;
}
@ -280,18 +267,6 @@ static const struct seq_operations pvc_seq_ops = {
.show = pvc_seq_show,
};
static int pvc_seq_open(struct inode *inode, struct file *file)
{
return __vcc_seq_open(inode, file, PF_ATMPVC, &pvc_seq_ops);
}
static const struct file_operations pvc_seq_fops = {
.open = pvc_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private,
};
static int vcc_seq_show(struct seq_file *seq, void *v)
{
if (v == SEQ_START_TOKEN) {
@ -314,18 +289,6 @@ static const struct seq_operations vcc_seq_ops = {
.show = vcc_seq_show,
};
static int vcc_seq_open(struct inode *inode, struct file *file)
{
return __vcc_seq_open(inode, file, 0, &vcc_seq_ops);
}
static const struct file_operations vcc_seq_fops = {
.open = vcc_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private,
};
static int svc_seq_show(struct seq_file *seq, void *v)
{
static const char atm_svc_banner[] =
@ -349,18 +312,6 @@ static const struct seq_operations svc_seq_ops = {
.show = svc_seq_show,
};
static int svc_seq_open(struct inode *inode, struct file *file)
{
return __vcc_seq_open(inode, file, PF_ATMSVC, &svc_seq_ops);
}
static const struct file_operations svc_seq_fops = {
.open = svc_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private,
};
static ssize_t proc_dev_atm_read(struct file *file, char __user *buf,
size_t count, loff_t *pos)
{
@ -434,9 +385,12 @@ int __init atm_proc_init(void)
if (!atm_proc_root)
return -ENOMEM;
proc_create_seq("devices", 0444, atm_proc_root, &atm_dev_seq_ops);
proc_create("pvc", 0444, atm_proc_root, &pvc_seq_fops);
proc_create("svc", 0444, atm_proc_root, &svc_seq_fops);
proc_create("vc", 0444, atm_proc_root, &vcc_seq_fops);
proc_create_seq_private("pvc", 0444, atm_proc_root, &pvc_seq_ops,
sizeof(struct vcc_state), (void *)(uintptr_t)PF_ATMPVC);
proc_create_seq_private("svc", 0444, atm_proc_root, &svc_seq_ops,
sizeof(struct vcc_state), (void *)(uintptr_t)PF_ATMSVC);
proc_create_seq_private("vc", 0444, atm_proc_root, &vcc_seq_ops,
sizeof(struct vcc_state), NULL);
return 0;
}