31b6611abf
This directory is filled dynamically with regular files, one for each service that RS knows about, named after its label. Its contents are still subject to (heavy) change, but currently expose the service's endpoint and number of restarts so far. Change-Id: Ie58c824bcb6382c8da7a714e59fee87329970b4b
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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if (first_time) {
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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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struct inode_stat stat;
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int r;
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/*
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* Initialize some state. If we are incompatible with the kernel, exit
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* immediately.
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*/
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if ((r = init_tree()) != OK)
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return r;
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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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