87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#define PATH_MAX 4096
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int main(int argc, char *argv[]) {
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// Check for correct usage
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if (argc != 2) {
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fprintf(stderr, "Usage: %s <pathname>\n", argv[0]);
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return 1;
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}
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const char *path = argv[1];
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struct stat statbuf;
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// Stat the given path to determine if it's a directory
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if (lstat(path, &statbuf) == -1) {
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perror("lstat");
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return 1;
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}
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// Case 1: The path is not a directory
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if (!S_ISDIR(statbuf.st_mode)) {
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int fd = open(path, O_RDONLY);
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if (fd == -1) {
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perror("open");
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return 1;
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}
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close(fd);
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return 0;
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}
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// Case 2: The path is a directory
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DIR *dirp = opendir(path);
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if (dirp == NULL) {
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perror("opendir");
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return 1;
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}
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struct dirent *entry;
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int success = 1;
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while ((entry = readdir(dirp)) != NULL) {
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// Skip . and ..
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {
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continue;
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}
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// Construct the full path
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char fullpath[PATH_MAX];
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snprintf(fullpath, PATH_MAX, "%s/%s", path, entry->d_name);
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// Stat the entry to check if it's a regular file
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struct stat entry_stat;
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if (lstat(fullpath, &entry_stat) == -1) {
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perror("lstat");
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success = 0;
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break;
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}
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// Only process regular files
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if (!S_ISREG(entry_stat.st_mode)) {
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continue;
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}
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// Try to open and immediately close the file
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int fd = open(fullpath, O_RDONLY);
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if (fd == -1) {
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perror("open");
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success = 0;
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break;
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}
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close(fd);
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}
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closedir(dirp);
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return (success ? 0 : 1);
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}
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