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Added sys_mkdir and memfs_vnode_mkdir() functions. Untested but all implemented.

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This commit is contained in:
Bahadir Balban
2008-02-15 17:32:41 +00:00
parent 5de93f707c
commit 09bd001e1a
6 changed files with 221 additions and 56 deletions
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50
tasks/fs0/src/syscalls.c
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@@ -8,6 +8,7 @@
#include <l4lib/ipcdefs.h>
#include <l4lib/arch/syscalls.h>
#include <l4lib/arch/syslib.h>
#include <lib/pathstr.h>
#include <lib/malloc.h>
#include <string.h>
#include <stdio.h>
@@ -38,19 +39,22 @@ int send_pager_opendata(l4id_t sender, int fd, unsigned long vnum)
return 0;
}
int do_open(l4id_t sender, const char *pathname, int flags, unsigned int mode)
/* FIXME:
* - Is it already open?
* - Allocate a copy of path string since lookup destroys it
* - Check flags and mode.
*/
int sys_open(l4id_t sender, const char *pathname, int flags, unsigned int mode)
{
struct vnode *v;
struct tcb *t;
int fd;
char *copypath = kmalloc(strlen(pathname) + 1);
/* FIXME: Use strnlen */
char *pathcopy = kmalloc(strlen(pathname));
/* FIXME: Use strncpy */
memcpy(pathcopy, pathname, strlen(pathname));
strcpy(copypath, pathname);
/* Get the vnode */
if (IS_ERR(v = vfs_lookup_bypath(vfs_root.pivot->sb, pathcopy)))
if (IS_ERR(v = vfs_lookup_bypath(vfs_root.pivot->sb, copypath)))
return (int)v;
/* Get the task */
@@ -68,18 +72,32 @@ int do_open(l4id_t sender, const char *pathname, int flags, unsigned int mode)
return 0;
}
/* FIXME:
* - Is it already open?
* - Allocate a copy of path string since lookup destroys it
* - Check flags and mode.
*/
int sys_open(l4id_t sender, const char *pathname, int flags, unsigned int mode)
{
return do_open(sender, pathname, flags, mode);
}
int sys_mkdir(l4id_t sender, const char *pathname, unsigned int mode)
{
char *parentpath, *pathbuf = kmalloc(strlen(pathname) + 1);
struct vnode *vparent;
char *newdir_name;
int err;
strcpy(pathbuf, pathname);
parentpath = pathbuf;
/* The last component is to be created */
newdir_name = splitpath_end(&parentpath, '/');
/* Check that the parentdir exists. */
if (IS_ERR(vparent = vfs_lookup_bypath(vfs_root.pivot->sb, parentpath)))
return (int)vparent;
/* The parent vnode must be a directory. */
if (!vfs_isdir(vparent))
return -ENOENT;
/* Create new directory under the parent */
if ((err = vparent->ops.mkdir(vparent, newdir_name)) < 0)
return err;
kfree(pathbuf);
return 0;
}