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author | Christoph Hellwig <hch@lst.de> | 2018-04-15 10:53:36 +0200 |
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committer | Christoph Hellwig <hch@lst.de> | 2018-05-16 07:24:30 +0200 |
commit | ce9fe43875d758c89f222d6b704bf63758f57635 (patch) | |
tree | d7275cba06b5e665fbc5b76a571abf2c4b39f8e2 /net/atm/proc.c | |
parent | a9170e0a923553cc12c3b00d816834316ebf226b (diff) | |
download | linux-stable-ce9fe43875d758c89f222d6b704bf63758f57635.tar.gz linux-stable-ce9fe43875d758c89f222d6b704bf63758f57635.tar.bz2 linux-stable-ce9fe43875d758c89f222d6b704bf63758f57635.zip |
atm: simplify procfs code
Use remove_proc_subtree to remove the whole subtree on cleanup, and
unwind the registration loop into individual calls. Switch to use
proc_create_seq where applicable.
Also don't bother handling proc_create* failures - the driver works
perfectly fine without the proc files, and the cleanup will handle
missing files gracefully.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'net/atm/proc.c')
-rw-r--r-- | net/atm/proc.c | 65 |
1 files changed, 7 insertions, 58 deletions
diff --git a/net/atm/proc.c b/net/atm/proc.c index 55410c00c7e2..f272b0f59d82 100644 --- a/net/atm/proc.c +++ b/net/atm/proc.c @@ -257,18 +257,6 @@ static const struct seq_operations atm_dev_seq_ops = { .show = atm_dev_seq_show, }; -static int atm_dev_seq_open(struct inode *inode, struct file *file) -{ - return seq_open(file, &atm_dev_seq_ops); -} - -static const struct file_operations devices_seq_fops = { - .open = atm_dev_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, -}; - static int pvc_seq_show(struct seq_file *seq, void *v) { static char atm_pvc_banner[] = @@ -440,58 +428,19 @@ void atm_proc_dev_deregister(struct atm_dev *dev) kfree(dev->proc_name); } -static struct atm_proc_entry { - char *name; - const struct file_operations *proc_fops; - struct proc_dir_entry *dirent; -} atm_proc_ents[] = { - { .name = "devices", .proc_fops = &devices_seq_fops }, - { .name = "pvc", .proc_fops = &pvc_seq_fops }, - { .name = "svc", .proc_fops = &svc_seq_fops }, - { .name = "vc", .proc_fops = &vcc_seq_fops }, - { .name = NULL, .proc_fops = NULL } -}; - -static void atm_proc_dirs_remove(void) -{ - static struct atm_proc_entry *e; - - for (e = atm_proc_ents; e->name; e++) { - if (e->dirent) - remove_proc_entry(e->name, atm_proc_root); - } - remove_proc_entry("atm", init_net.proc_net); -} - int __init atm_proc_init(void) { - static struct atm_proc_entry *e; - int ret; - atm_proc_root = proc_net_mkdir(&init_net, "atm", init_net.proc_net); if (!atm_proc_root) - goto err_out; - for (e = atm_proc_ents; e->name; e++) { - struct proc_dir_entry *dirent; - - dirent = proc_create(e->name, 0444, - atm_proc_root, e->proc_fops); - if (!dirent) - goto err_out_remove; - e->dirent = dirent; - } - ret = 0; -out: - return ret; - -err_out_remove: - atm_proc_dirs_remove(); -err_out: - ret = -ENOMEM; - goto out; + 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); + return 0; } void atm_proc_exit(void) { - atm_proc_dirs_remove(); + remove_proc_subtree("atm", init_net.proc_net); } |