96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/fcntl.h>
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#include <sys/param.h>
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#include <sys/buf.h>
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#include <sys/stat.h>
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#include <cachefs/cachefs_fs.h>
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#include "subr.h"
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char *Progname;
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extern int errno;
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void
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print_dirents(char *dirbuf, int dirbuflen)
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{
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dirent64_t *dep = (dirent64_t *)dirbuf;
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for (dep = (dirent64_t *)dirbuf; dirbuflen; dirbuflen -= dep->d_reclen,
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dep = (dirent64_t *)((u_long)dep + (u_long)dep->d_reclen)) {
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if (dep->d_reclen > dirbuflen) {
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pr_err("truncated directory entry");
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}
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printf("%d\t%d\t%d\t%s\n", dep->d_ino, (int)dep->d_off,
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(int)dep->d_reclen, dep->d_name);
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}
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}
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int
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main(int argc, char **argv)
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{
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int dirbuflen;
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char *dirbuf;
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int fd;
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char *file;
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int status = 0;
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fileheader_t fh;
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int bytes;
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struct stat sb;
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Progname = *argv++;
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argc--;
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for (file = *argv; file && argc; argc--, file = *++argv) {
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fd = open(file, O_RDONLY);
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if (fd == -1) {
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pr_err("open error for %s: %s", file, strerror(errno));
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status = 1;
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} else if (fstat(fd, &sb) == -1) {
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pr_err("stat error for %s: %s", file, strerror(errno));
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status = 1;
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} else {
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bytes = read(fd, &fh, FILEHEADER_SIZE);
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switch (bytes) {
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case -1:
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pr_err("read error for %s: %s", file, strerror(errno));
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status = 1;
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break;
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case FILEHEADER_SIZE:
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dirbuflen = sb.st_size - FILEHEADER_SIZE;
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dirbuf = malloc(dirbuflen);
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if (dirbuf) {
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bytes = read(fd, dirbuf, dirbuflen);
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if (bytes == dirbuflen) {
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print_dirents(dirbuf, dirbuflen);
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} else if (bytes == -1) {
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pr_err("read error for %s: %s", file,
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strerror(errno));
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status = 1;
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} else {
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pr_err("Short read (%d of %d): %s", bytes,
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dirbuflen, file);
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status = 1;
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}
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free(dirbuf);
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} else {
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pr_err("Out of memory");
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status = 1;
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}
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break;
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case 0:
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pr_err("Empty file: %s", file);
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status = 1;
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break;
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default:
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pr_err("Short file header (%d of %d): %s", bytes,
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FILEHEADER_SIZE, file);
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status = 1;
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}
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close(fd);
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}
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}
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return(status);
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}
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