-
/*
- * makedir.c -- make a directory
- *
- * $Id$
- *
- * This code is Copyright (c) 2002, by the authors of nmh. See the
- * COPYRIGHT file in the root directory of the nmh distribution for
- * complete copyright information.
- */
+** makedir.c -- make a directory
+**
+** This code is Copyright (c) 2002, by the authors of nmh. See the
+** COPYRIGHT file in the root directory of the nmh distribution for
+** complete copyright information.
+*/
/*
- * Modified to try recursive create.
- */
+** Modified to try recursive create.
+*/
#include <h/mh.h>
#include <errno.h>
#include <sys/param.h>
#include <sys/file.h>
-
+#include <sys/stat.h>
+
int
-makedir (char *dir)
+makedir(char *dir)
{
- char path[PATH_MAX];
- char* folder_perms_ASCII;
- int had_an_error = 0;
- mode_t folder_perms, saved_umask;
- pid_t pid;
- register char* c;
+ char path[PATH_MAX];
+ char *cp;
+ int had_an_error = 0;
+ mode_t folder_perms, saved_umask;
+ char* c;
- context_save(); /* save the context file */
- fflush(stdout);
+ context_save(); /* save the context file */
+ fflush(stdout);
- if (!(folder_perms_ASCII = context_find ("folder-protect")))
- folder_perms_ASCII = foldprot; /* defaults to "700" */
-
- /* Because mh-profile.man documents "Folder-Protect:" as an octal constant,
- and we don't want to force the user to remember to include a leading
- zero, we call atooi(folder_perms_ASCII) here rather than
- strtoul(folder_perms_ASCII, NULL, 0). Therefore, if anyone ever tries to
- specify a mode in say, hex, they'll get garbage. (I guess nmh uses its
- atooi() function rather than calling strtoul() with a radix of 8 because
- some ancient platforms are missing that functionality. */
- folder_perms = atooi(folder_perms_ASCII);
+ if (!(cp = context_find("folder-protect")) || !*cp) {
+ cp = foldprot;
+ }
+ folder_perms = strtoul(cp, NULL, 8);
- /* Folders have definite desired permissions that are set -- we don't want
- to interact with the umask. Clear it temporarily. */
- saved_umask = umask(0);
+ /*
+ ** Folders have definite desired permissions that are set -- we
+ ** don't want to interact with the umask. Clear it temporarily.
+ */
+ saved_umask = umask(0);
- if (getuid () == geteuid ()) {
- c = strncpy(path, dir, sizeof(path));
-
- while (!had_an_error && (c = strchr((c + 1), '/')) != NULL) {
- *c = (char)0;
- if (access(path, X_OK)) {
- if (errno != ENOENT){
- advise (dir, "unable to create directory");
- had_an_error = 1;
- }
+ c = strncpy(path, dir, sizeof(path));
+
+ while (!had_an_error && (c = strchr((c + 1), '/')) != NULL) {
+ *c = '\0';
/* Create an outer directory. */
- if (mkdir(path, folder_perms)) {
- advise (dir, "unable to create directory");
- had_an_error = 1;
+ if (mkdir(path, folder_perms) == -1 &&
+ errno != EEXIST) {
+ advise(dir, "unable to create directory");
+ had_an_error = 1;
}
- }
- *c = '/';
+ *c = '/';
}
- if (!had_an_error) {
- /* Create the innermost nested subdirectory of the path we're being
- asked to create. */
- if (mkdir (dir, folder_perms) == -1) {
- advise (dir, "unable to create directory");
+ /*
+ ** Create the innermost nested subdirectory of the
+ ** path we're being asked to create.
+ */
+ if (!had_an_error && mkdir(dir, folder_perms)==-1) {
+ advise(dir, "unable to create directory");
had_an_error = 1;
- }
}
- }
- else {
- /* Ummm, why do we want to avoid creating directories with the effective
- user ID? None of the nmh tools are installed such that the effective
- should be different from the real, and if some parent process made
- the two be different, I don't see why it should be our job to enforce
- the real UID. Also, why the heck do we call the mkdir executable
- rather than the library function in this case?? If we do want to
- call the mkdir executable, we should at least be giving it -p (and
- change the single chmod() call below) so it can successfully create
- nested directories like the above code can.
-
- -- Dan Harkless <dan-nmh@dilvish.speed.net> */
- switch (pid = vfork()) {
- case -1:
- advise ("fork", "unable to");
- return 0;
-
- case 0:
- setgid (getgid ());
- setuid (getuid ());
-
- execl ("/bin/mkdir", "mkdir", dir, NULL);
- execl ("/usr/bin/mkdir", "mkdir", dir, NULL);
- fprintf (stderr, "unable to exec ");
- perror ("mkdir");
- _exit (-1);
-
- default:
- if (pidXwait(pid, "mkdir"))
- return 0;
- break;
- }
-
- chmod (dir, folder_perms);
- }
-
- umask(saved_umask); /* put the user's umask back */
+ umask(saved_umask); /* put the user's umask back */
- if (had_an_error)
- return 0; /* opposite of UNIX error return convention */
- else
- return 1;
+ return (had_an_error) ? 0 : 1;
}
projects / mmh / blobdiff