diff options
| -rw-r--r-- | drivers/scsi/scsi_devinfo.c | 77 |
1 files changed, 44 insertions, 33 deletions
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index b8de041bc0ae..a235802f2981 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -449,37 +449,40 @@ int scsi_get_device_flags(struct scsi_device *sdev, } #ifdef CONFIG_SCSI_PROC_FS -/* - * proc_scsi_dev_info_read: dump the scsi_dev_info_list via - * /proc/scsi/device_info - */ -static int proc_scsi_devinfo_read(char *buffer, char **start, - off_t offset, int length) +static int devinfo_seq_show(struct seq_file *m, void *v) { - struct scsi_dev_info_list *devinfo; - int size, len = 0; - off_t begin = 0; - off_t pos = 0; + struct scsi_dev_info_list *devinfo = + list_entry(v, struct scsi_dev_info_list, dev_info_list); - list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { - size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n", + seq_printf(m, "'%.8s' '%.16s' 0x%x\n", devinfo->vendor, devinfo->model, devinfo->flags); - len += size; - pos = begin + len; - if (pos < offset) { - len = 0; - begin = pos; - } - if (pos > offset + length) - goto stop_output; - } + return 0; +} + +static void * devinfo_seq_start(struct seq_file *m, loff_t *pos) +{ + return seq_list_start(&scsi_dev_info_list, *pos); +} -stop_output: - *start = buffer + (offset - begin); /* Start of wanted data */ - len -= (offset - begin); /* Start slop */ - if (len > length) - len = length; /* Ending slop */ - return (len); +static void * devinfo_seq_next(struct seq_file *m, void *v, loff_t *pos) +{ + return seq_list_next(v, &scsi_dev_info_list, pos); +} + +static void devinfo_seq_stop(struct seq_file *m, void *v) +{ +} + +static const struct seq_operations scsi_devinfo_seq_ops = { + .start = devinfo_seq_start, + .next = devinfo_seq_next, + .stop = devinfo_seq_stop, + .show = devinfo_seq_show, +}; + +static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &scsi_devinfo_seq_ops); } /* @@ -489,11 +492,12 @@ stop_output: * integer value of flag to the scsi device info list. * To use, echo "vendor:model:flag" > /proc/scsi/device_info */ -static int proc_scsi_devinfo_write(struct file *file, const char __user *buf, - unsigned long length, void *data) +static ssize_t proc_scsi_devinfo_write(struct file *file, + const char __user *buf, + size_t length, loff_t *ppos) { char *buffer; - int err = length; + ssize_t err = length; if (!buf || length>PAGE_SIZE) return -EINVAL; @@ -517,6 +521,15 @@ out: free_page((unsigned long)buffer); return err; } + +static const struct file_operations scsi_devinfo_proc_fops = { + .owner = THIS_MODULE, + .open = proc_scsi_devinfo_open, + .read = seq_read, + .write = proc_scsi_devinfo_write, + .llseek = seq_lseek, + .release = seq_release, +}; #endif /* CONFIG_SCSI_PROC_FS */ module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); @@ -577,15 +590,13 @@ int __init scsi_init_devinfo(void) } #ifdef CONFIG_SCSI_PROC_FS - p = create_proc_entry("scsi/device_info", 0, NULL); + p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); if (!p) { error = -ENOMEM; goto out; } p->owner = THIS_MODULE; - p->get_info = proc_scsi_devinfo_read; - p->write_proc = proc_scsi_devinfo_write; #endif /* CONFIG_SCSI_PROC_FS */ out: |