proc: switch /proc/version to seq_file

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

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index 70607a0..97985c8 100644 (file)
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -12,6 +12,7 @@ proc-y       += inode.o root.o base.o generic.o array.o \
 proc-y += loadavg.o
 proc-y += meminfo.o
 proc-y += uptime.o
+proc-y += version.o
 proc-$(CONFIG_PROC_SYSCTL)     += proc_sysctl.o
 proc-$(CONFIG_NET)             += proc_net.o
 proc-$(CONFIG_PROC_KCORE)      += kcore.o

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 1aba51b..4814b11 100644 (file)
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -115,18 +115,6 @@ static const struct file_operations proc_zoneinfo_file_operations = {
        .release        = seq_release,
 };
 
-static int version_read_proc(char *page, char **start, off_t off,
-                                int count, int *eof, void *data)
-{
-       int len;
-
-       len = snprintf(page, PAGE_SIZE, linux_proc_banner,
-               utsname()->sysname,
-               utsname()->release,
-               utsname()->version);
-       return proc_calc_metrics(page, start, off, count, eof, len);
-}
-
 extern const struct seq_operations cpuinfo_op;
 static int cpuinfo_open(struct inode *inode, struct file *file)
 {
@@ -680,7 +668,6 @@ void __init proc_misc_init(void)
                char *name;
                int (*read_proc)(char*,char**,off_t,int,int*,void*);
        } *p, simple_ones[] = {
-               {"version",     version_read_proc},
 #ifdef CONFIG_PROC_HARDWARE
                {"hardware",    hardware_read_proc},
 #endif

diff --git a/fs/proc/version.c b/fs/proc/version.c
new file mode 100644 (file)
index 0000000..76817a6
--- /dev/null
+++ b/fs/proc/version.c
@@ -0,0 +1,34 @@
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/utsname.h>
+
+static int version_proc_show(struct seq_file *m, void *v)
+{
+       seq_printf(m, linux_proc_banner,
+               utsname()->sysname,
+               utsname()->release,
+               utsname()->version);
+       return 0;
+}
+
+static int version_proc_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, version_proc_show, NULL);
+}
+
+static const struct file_operations version_proc_fops = {
+       .open           = version_proc_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+
+static int __init proc_version_init(void)
+{
+       proc_create("version", 0, NULL, &version_proc_fops);
+       return 0;
+}
+module_init(proc_version_init);