3c6274b8be
- when /proc/cpuinfo is read procfs retrievs information about cpus from the kernel, formats it and prints it
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/* ProcFS - main.c - by Alen Stojanov and David van Moolenbroek */
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#include "inc.h"
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#include "cpuinfo.h"
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FORWARD _PROTOTYPE( void init_hook, (void) );
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/* The hook functions that will be called by VTreeFS. */
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PRIVATE struct fs_hooks hooks = {
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init_hook,
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NULL, /* cleanup_hook */
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lookup_hook,
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getdents_hook,
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read_hook,
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rdlink_hook,
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NULL /* message_hook */
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};
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/*===========================================================================*
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* construct_tree *
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*===========================================================================*/
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PRIVATE void construct_tree(struct inode *dir, struct file *files)
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{
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/* Construct a tree of static files from a null-terminated array of
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* file structures, recursively creating directories which have their
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* associated data point to child file structures.
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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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* init_hook *
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*===========================================================================*/
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PRIVATE void init_hook(void)
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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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struct inode *root;
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root = get_root_inode();
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construct_tree(root, root_files);
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}
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/*===========================================================================*
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* main *
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*===========================================================================*/
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PUBLIC int main(int argc, char *argv[])
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{
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/* ProcFS entry point.
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*/
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struct inode_stat stat;
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int r;
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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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/* Start VTreeFS. This call does not return. */
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start_vtreefs(&hooks, NR_INODES, &stat, NR_PROCS + NR_TASKS);
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return 0;
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}
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