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creating a temporary folder in tmp folder c language Mac OS X

Answer 1

+2 A:

Try the mkdtemp function.

char *tmpdir;
strcpy (template, "/tmp/myprog.XXXXXX");
tmpdir = mkdtemp (template);

if (!tmpdir) {
    // Error out here
}

printf ("Temporary directory created : %s", tmpdir);

Tim Kane 2010-06-11 05:52:04

"The mkdtemp() function generates a uniquely-named temporary directory from template. The last six characters of template must be XXXXXX and these are replaced with a string that makes the directory name unique." -- the question didn't ask for these specifications

Sev 2010-06-11 06:02:37

@Sev: nor discarded. The OP still can use `mkdir` if he doesn't care about unique naming. IMO, launching a process to only create a directory is kinda exaggerated.

jweyrich 2010-06-11 06:08:50

you're right on the money there

Sev 2010-06-11 06:14:09

@Tim: would you update your example to assign the return value to a variable? We get the idea, but the OP might not (no disrespect here).I find important to mention about `mkdir` too.

jweyrich 2010-06-11 06:23:14

Answer 2

A:

Since I can't change/improve other's answers yet, I'm writing one myself.

I'd use stat and mkdir. For example:

#include <errno.h> // for errno
#include <stdio.h> // for printf
#include <stdlib.h> // for EXIT_*
#include <string.h> // for strerror
#include <sys/stat.h> // for stat and mkdir

int main() {
    const char *mydir = "/tmp/mydir";
    struct stat st;
    if (stat(mydir, &st) == 0) {
        printf("%s already exists\n", mydir);
        return EXIT_SUCCESS;
    }
    if (mkdir(mydir, S_IRWXU|S_IRWXG) != 0) {
        printf("Error creating directory: %s\n", strerror(errno));
        return EXIT_FAILURE;
    }
    printf("%s successfully created\n", mydir);
    return EXIT_SUCCESS;
}

jweyrich 2010-06-11 07:32:38

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