94 lines
1.8 KiB
C
94 lines
1.8 KiB
C
/* ProcFS - main.c - main functions of the process file system */
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#include "inc.h"
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static void init_hook(void);
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/* The hook functions that will be called by VTreeFS. */
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static struct fs_hooks hooks = {
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.init_hook = init_hook,
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.lookup_hook = lookup_hook,
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.getdents_hook = getdents_hook,
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.read_hook = read_hook,
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.rdlink_hook = rdlink_hook,
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};
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/*
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* Construct a tree of static files from a null-terminated array of file
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* structures, recursively creating directories which have their associated
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* data point to child file structures.
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*/
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static void
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construct_tree(struct inode * dir, struct file * files)
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{
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struct file *file;
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struct inode *node;
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struct inode_stat stat;
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stat.uid = SUPER_USER;
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stat.gid = SUPER_USER;
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stat.size = 0;
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stat.dev = NO_DEV;
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for (file = files; file->name != NULL; file++) {
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stat.mode = file->mode;
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node = add_inode(dir, file->name, NO_INDEX, &stat, (index_t)0,
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(cbdata_t)file->data);
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assert(node != NULL);
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if (S_ISDIR(file->mode))
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construct_tree(node, (struct file *)file->data);
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}
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}
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/*
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* Initialization hook. Generate the static part of the tree.
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*/
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static void
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init_hook(void)
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{
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static int first_time = TRUE;
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struct inode *root;
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int r;
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if (first_time) {
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/*
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* Initialize some state. If we are incompatible with the kernel,
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* exit immediately.
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*/
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if ((r = init_tree()) != OK)
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panic("init_tree failed!");
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root = get_root_inode();
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construct_tree(root, root_files);
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service_init();
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first_time = FALSE;
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}
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}
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/*
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* ProcFS entry point.
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*/
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int main(void)
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{
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static struct inode_stat stat;
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/* Properties of the root directory. */
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stat.mode = DIR_ALL_MODE;
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stat.uid = SUPER_USER;
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stat.gid = SUPER_USER;
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stat.size = 0;
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stat.dev = NO_DEV;
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/* Run VTreeFS. */
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run_vtreefs(&hooks, NR_INODES, 0, &stat, NR_PROCS + NR_TASKS,
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BUF_SIZE);
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return 0;
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}
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