ref: 1bb60e045eb1e64864dfc16e4356f134353bc331
parent: 0795a55ce9ffdf0dbdebf73ee069b600cd353006
author: mkf <mkf@cloud9p.org>
date: Sat Dec 2 19:02:14 EST 2023
envfs: import
--- /dev/null
+++ b/fs/envfs.c
@@ -1,0 +1,99 @@
+#include <u.h>
+#include <libc.h>
+#include <err.h>
+#include <vfs.h>
+#include <mem.h>
+#include <user.h>
+
+static fs_t *envfs;
+
+fs_t*
+envfs_init(void)
+{+ char *path;
+ int i = 0;
+ ll_t *ulist, *flist;
+ file_t *root;
+
+ if(envfs->state == READY)
+ return envfs;
+
+ envfs = (fs_t*)malloc(sizeof(fs_t));
+
+ ulist = malloc(sizeof(ll_t*));
+ flist = malloc(sizeof(ll_t*));
+
+ lladd(ulist, &cuser);
+
+ envfs->fid = 1;
+ envfs->state = READY;
+ envfs->users = ulist;
+
+ /* set root up */
+ root = (file_t*)malloc(sizeof(file_t));
+
+ root->fid = 0;
+ root->size = 0;
+
+ root->owner = cuser.id;
+ root->perms = 0444; /* u=r, o=r */
+
+ root->path = malloc(sizeof(PATH_MAX));
+ strncpy(root->path, "/env/", strlen("/env/"));+ root->name = "";
+
+ flist->val = root;
+ flist->next = nil;
+
+ envfs->files = flist;
+
+ return envfs;
+
+}
+
+/* TODO: reject invalid names */
+file_t*
+envfs_create(char *name)
+{+ char *path;
+ ll_t *t;
+ file_t *f;
+
+ path = "/env/";
+
+ t = envfs->files;
+ while(t->next != nil)
+ t = (ll_t*)t->next;
+
+ f = (file_t*)malloc(sizeof(file_t));
+
+ f->fid = envfs->fid++;
+ f->perms = 0600;
+ f->name = name;
+
+ f->path = malloc(sizeof(PATH_MAX));
+ strncpy(f->path, path, strlen(path));
+
+ f->owner = cuser.id;
+
+ /* t now should point to last item in fs->files */
+ lladd(t, f);
+
+ return f;
+}
+
+int
+envfs_new(char *name, char *buf)
+{+ ll_t *t;
+ file_t *f;
+ if(envfs->state != READY)
+ envfs_init();
+
+ f = envfs_create(name);
+ f->buf = malloc(strlen(buf));
+ strncpy(f->buf, buf, strlen(buf));
+ f->size = strlen(buf);
+
+ return OK;
+}