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various umask-related cleanups 

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2595 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
master
David Lawrence Ramsey 2005-06-05 19:33:27 +00:00
parent 81dabf2be7
commit 6fdc81ae04
1 changed files with 19 additions and 12 deletions
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31
src/files.c
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@ -1139,17 +1139,18 @@ char *check_writable_directory(const char *path)
char *safe_tempfile(FILE **f)
{
char *full_tempdir = NULL;
const char *TMPDIR_env;
int filedesc;
const char *tmpdir_env;
int fd;
mode_t original_umask = 0;
assert(f != NULL);
/* If $TMPDIR is set and non-empty, set tempdir to it, run it
* through get_full_path(), and save the result in full_tempdir.
* Otherwise, leave full_tempdir set to NULL. */
TMPDIR_env = getenv("TMPDIR");
if (TMPDIR_env != NULL && TMPDIR_env[0] != '\0')
full_tempdir = check_writable_directory(TMPDIR_env);
tmpdir_env = getenv("TMPDIR");
if (tmpdir_env != NULL && tmpdir_env[0] != '\0')
full_tempdir = check_writable_directory(tmpdir_env);
/* If $TMPDIR is unset, empty, or not a writable directory, and
* full_tempdir is NULL, try P_tmpdir instead. */
@ -1162,15 +1163,21 @@ char *safe_tempfile(FILE **f)
full_tempdir = charealloc(full_tempdir, strlen(full_tempdir) + 12);
strcat(full_tempdir, "nano.XXXXXX");
filedesc = mkstemp(full_tempdir);
if (filedesc != -1)
*f = fdopen(filedesc, "r+b");
original_umask = umask(0);
umask(S_IRWXG | S_IRWXO);
fd = mkstemp(full_tempdir);
if (fd != -1)
*f = fdopen(fd, "r+b");
else {
free(full_tempdir);
full_tempdir = NULL;
}
umask(original_umask);
return full_tempdir;
}
@ -1516,13 +1523,13 @@ int write_file(const char *name, FILE *f_open, bool tmp, int append,
if (f_open == NULL) {
original_umask = umask(0);
umask(original_umask);
/* If we create a temp file, we don't let anyone else access it.
* We create a temp file if tmp is TRUE or if we're
* prepending. */
if (tmp || append == 2)
* We create a temp file if tmp is TRUE. */
if (tmp)
umask(S_IRWXG | S_IRWXO);
else
umask(original_umask);
}
/* If we're prepending, copy the file to a temp file. */