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/* Copyright (C) 2001-2005 by Hans Reiser, licensing governed by
reiser4progs/COPYING.
browse.c -- filesystem browse code. */
#include <unistd.h>
#include <stdio.h>
#include "debugfs.h"
/* If file is a regular one we show its contant here */
static errno_t debugfs_reg_cat(reiser4_object_t *object) {
errno_t res;
int32_t read;
char buff[4096];
if ((res = reiser4_object_reset(object))) {
aal_error("Can't reset object %s.",
reiser4_print_inode(&object->info.object));
return res;
}
/* The loop until object_read returns zero bytes read */
while (1) {
aal_memset(buff, 0, sizeof(buff));
read = reiser4_object_read(object, buff, sizeof(buff));
if (read <= 0)
break;
printf(buff);
}
return 0;
}
/* If object is the directory, we show its contant here */
static errno_t debugfs_dir_cat(reiser4_object_t *object) {
errno_t res;
entry_hint_t entry;
if ((res = reiser4_object_reset(object))) {
aal_error("Can't reset object %s.",
reiser4_print_inode(&object->info.object));
return res;
}
/* The loop until all entry read */
while (reiser4_object_readdir(object, &entry) > 0) {
printf("[%s] %s\n", reiser4_print_key(&entry.object),
entry.name);
}
printf("\n");
return 0;
}
/* Show special device info. */
static errno_t debugfs_spl_cat(reiser4_object_t *object) {
errno_t res;
sdhint_lw_t lwh;
stat_hint_t stath;
sdhint_unix_t unixh;
aal_memset(&stath, 0, sizeof(stath));
/* Preparing stat data hint. */
stath.extmask = (1 << SDEXT_UNIX_ID |
1 << SDEXT_LW_ID);
stath.ext[SDEXT_LW_ID] = &lwh;
stath.ext[SDEXT_UNIX_ID] = &unixh;
if ((res = reiser4_object_stat(object, &stath))) {
aal_error("Can't stat object %s.",
reiser4_print_inode(&object->info.object));
return res;
}
/* Printing @rdev and @mode. */
printf("rdev:\t0x%x\nmode:\t0x%u\n", unixh.rdev, lwh.mode);
return 0;
}
/* Common entry point for --ls and --cat options handling code */
errno_t debugfs_browse(reiser4_fs_t *fs, char *filename) {
errno_t res = -EINVAL;
reiser4_object_t *object;
if (!(object = reiser4_semantic_open(fs->tree, filename, NULL, 1))) {
aal_error("Can't open %s.", filename);
return -EINVAL;
}
switch (reiser4_psobj(object)->p.id.group) {
case REG_OBJECT:
res = debugfs_reg_cat(object);
break;
case DIR_OBJECT:
res = debugfs_dir_cat(object);
break;
case SYM_OBJECT:
res = debugfs_reg_cat(object);
break;
case SPL_OBJECT:
res = debugfs_spl_cat(object);
break;
default:
aal_info("Sorry, browsing of the special "
"files is not implemented yet.");
}
reiser4_object_close(object);
return res;
}
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