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/*
* Prints each directory entry, its inode and d_type as returned by 'readdir'.
* Skips '.' and '..' because readdir is not required to return them and
* some of our examples don't. However if they are returned, their d_type
* should be valid.
*/
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
int main(int argc, char* argv[])
{
DIR* dirp;
struct dirent* dent;
if (argc != 2) {
fprintf(stderr, "Usage: readdir_inode dir\n");
return 1;
}
dirp = opendir(argv[1]);
if (dirp == NULL) {
perror("failed to open directory");
return 2;
}
errno = 0;
dent = readdir(dirp);
while (dent != NULL) {
if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0) {
printf("%llu %d %s\n", (unsigned long long)dent->d_ino,
(int)dent->d_type, dent->d_name);
if ((long long)dent->d_ino < 0)
fprintf(stderr,"%s : bad d_ino %llu\n",
dent->d_name, (unsigned long long)dent->d_ino);
if ((dent->d_type < 1) || (dent->d_type > 15))
fprintf(stderr,"%s : bad d_type %d\n",
dent->d_name, (int)dent->d_type);
} else {
if (dent->d_type != DT_DIR)
fprintf(stderr,"%s : bad d_type %d\n",
dent->d_name, (int)dent->d_type);
}
dent = readdir(dirp);
}
if (errno != 0) {
perror("failed to read directory entry");
return 3;
}
closedir(dirp);
return 0;
}
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