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authorGreg Kroah-Hartman <gregkh@suse.de>2005-06-20 21:15:16 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-06-26 12:25:05 -0700
commitbdaf8529385d5126ef791e8f1914afff8cd59bcf (patch)
treeaa9e917703526ad034a19cf1b16002aba486cd17 /init/do_mounts_devfs.c
parenta29641883f57f36424e3219ae9ff48dd6cd34de0 (diff)
downloadop-kernel-dev-bdaf8529385d5126ef791e8f1914afff8cd59bcf.zip
op-kernel-dev-bdaf8529385d5126ef791e8f1914afff8cd59bcf.tar.gz
[PATCH] devfs: Remove devfs from the init code
This patch removes the devfs code from the init/ directory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'init/do_mounts_devfs.c')
-rw-r--r--init/do_mounts_devfs.c137
1 files changed, 0 insertions, 137 deletions
diff --git a/init/do_mounts_devfs.c b/init/do_mounts_devfs.c
deleted file mode 100644
index cc52647..0000000
--- a/init/do_mounts_devfs.c
+++ /dev/null
@@ -1,137 +0,0 @@
-
-#include <linux/kernel.h>
-#include <linux/dirent.h>
-#include <linux/string.h>
-
-#include "do_mounts.h"
-
-void __init mount_devfs(void)
-{
- sys_mount("devfs", "/dev", "devfs", 0, NULL);
-}
-
-void __init umount_devfs(char *path)
-{
- sys_umount(path, 0);
-}
-
-/*
- * If the dir will fit in *buf, return its length. If it won't fit, return
- * zero. Return -ve on error.
- */
-static int __init do_read_dir(int fd, void *buf, int len)
-{
- long bytes, n;
- char *p = buf;
- sys_lseek(fd, 0, 0);
-
- for (bytes = 0; bytes < len; bytes += n) {
- n = sys_getdents64(fd, (struct linux_dirent64 *)(p + bytes),
- len - bytes);
- if (n < 0)
- return n;
- if (n == 0)
- return bytes;
- }
- return 0;
-}
-
-/*
- * Try to read all of a directory. Returns the contents at *p, which
- * is kmalloced memory. Returns the number of bytes read at *len. Returns
- * NULL on error.
- */
-static void * __init read_dir(char *path, int *len)
-{
- int size;
- int fd = sys_open(path, 0, 0);
-
- *len = 0;
- if (fd < 0)
- return NULL;
-
- for (size = 1 << 9; size <= (PAGE_SIZE << MAX_ORDER); size <<= 1) {
- void *p = kmalloc(size, GFP_KERNEL);
- int n;
- if (!p)
- break;
- n = do_read_dir(fd, p, size);
- if (n > 0) {
- sys_close(fd);
- *len = n;
- return p;
- }
- kfree(p);
- if (n == -EINVAL)
- continue; /* Try a larger buffer */
- if (n < 0)
- break;
- }
- sys_close(fd);
- return NULL;
-}
-
-/*
- * recursively scan <path>, looking for a device node of type <dev>
- */
-static int __init find_in_devfs(char *path, unsigned dev)
-{
- char *end = path + strlen(path);
- int rest = path + 64 - end;
- int size;
- char *p = read_dir(path, &size);
- char *s;
-
- if (!p)
- return -1;
- for (s = p; s < p + size; s += ((struct linux_dirent64 *)s)->d_reclen) {
- struct linux_dirent64 *d = (struct linux_dirent64 *)s;
- if (strlen(d->d_name) + 2 > rest)
- continue;
- switch (d->d_type) {
- case DT_BLK:
- sprintf(end, "/%s", d->d_name);
- if (bstat(path) != dev)
- break;
- kfree(p);
- return 0;
- case DT_DIR:
- if (strcmp(d->d_name, ".") == 0)
- break;
- if (strcmp(d->d_name, "..") == 0)
- break;
- sprintf(end, "/%s", d->d_name);
- if (find_in_devfs(path, dev) < 0)
- break;
- kfree(p);
- return 0;
- }
- }
- kfree(p);
- return -1;
-}
-
-/*
- * create a device node called <name> which points to
- * <devfs_name> if possible, otherwise find a device node
- * which matches <dev> and make <name> a symlink pointing to it.
- */
-int __init create_dev(char *name, dev_t dev, char *devfs_name)
-{
- char path[64];
-
- sys_unlink(name);
- if (devfs_name && devfs_name[0]) {
- if (strncmp(devfs_name, "/dev/", 5) == 0)
- devfs_name += 5;
- sprintf(path, "/dev/%s", devfs_name);
- if (sys_access(path, 0) == 0)
- return sys_symlink(devfs_name, name);
- }
- if (!dev)
- return -1;
- strcpy(path, "/dev");
- if (find_in_devfs(path, new_encode_dev(dev)) < 0)
- return -1;
- return sys_symlink(path + 5, name);
-}
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