umka/tools/mkdoubledirs.c

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/*
SPDX-License-Identifier: GPL-2.0-or-later
UMKa - User-Mode KolibriOS developer tools
mkdoubledirs - make directories with same names inside: dirname/dirname,
useful for search testing
Copyright (C) 2022 Ivan Baravy <dunkaist@gmail.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
int main(int argc, char *argv[])
{
const char *prefix;
const char *path;
unsigned count;
if (argc != 4) {
fprintf(stderr, "mkdoubledirs <directory> <prefix> <count>\n");
exit(1);
}
path = argv[1];
prefix = argv[2];
sscanf(argv[3], "%u", &count);
if (chdir(path)) {
fprintf(stderr, "Can't change dir to %s: %s\n", path, strerror(errno));
exit(1);
}
char dirname[256];
for(unsigned cur = 0; cur < count; cur++) {
sprintf(dirname, "%s%10.10u", prefix, cur);
if(mkdirat(AT_FDCWD, dirname, 0755)) {
fprintf(stderr, "Can't mkdir %s: %s\n", dirname, strerror(errno));
exit(1);
}
int dirfd = open(dirname, O_DIRECTORY);
if (dirfd == -1) {
fprintf(stderr, "Can't open %s: %s\n", dirname, strerror(errno));
exit(1);
}
if(mkdirat(dirfd, dirname, 0755)) {
fprintf(stderr, "Can't mkdir %s: %s\n", dirname, strerror(errno));
exit(1);
}
close(dirfd);
}
return 0;
}