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proc: switch /proc/cmdline to seq_file

and move it to fs/proc/cmdline.c while I'm at it.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
master
Alexey Dobriyan 13 years ago
parent
commit
cf9887f102
  1. 1
      fs/proc/Makefile
  2. 29
      fs/proc/cmdline.c
  3. 10
      fs/proc/proc_misc.c

1
fs/proc/Makefile

@ -9,6 +9,7 @@ proc-$(CONFIG_MMU) := mmu.o task_mmu.o
proc-y += inode.o root.o base.o generic.o array.o \
proc_tty.o proc_misc.o
proc-y += cmdline.o
proc-y += loadavg.o
proc-y += meminfo.o
proc-y += uptime.o

29
fs/proc/cmdline.c

@ -0,0 +1,29 @@
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
static int cmdline_proc_show(struct seq_file *m, void *v)
{
seq_printf(m, "%s\n", saved_command_line);
return 0;
}
static int cmdline_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, cmdline_proc_show, NULL);
}
static const struct file_operations cmdline_proc_fops = {
.open = cmdline_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int __init proc_cmdline_init(void)
{
proc_create("cmdline", 0, NULL, &cmdline_proc_fops);
return 0;
}
module_init(proc_cmdline_init);

10
fs/proc/proc_misc.c

@ -472,15 +472,6 @@ static const struct file_operations proc_interrupts_operations = {
.release = seq_release,
};
static int cmdline_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%s\n", saved_command_line);
return proc_calc_metrics(page, start, off, count, eof, len);
}
#ifdef CONFIG_FILE_LOCKING
static int locks_open(struct inode *inode, struct file *filp)
{
@ -641,7 +632,6 @@ void __init proc_misc_init(void)
char *name;
int (*read_proc)(char*,char**,off_t,int,int*,void*);
} *p, simple_ones[] = {
{"cmdline", cmdline_read_proc},
{"execdomains", execdomains_read_proc},
{NULL,}
};

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