7961acce46
Let developer to choose, case by case, what sort of return value is best in her code. The xmkstemp() is for users who want file descriptor as return value of the function, xfmkstemp() will return FILE pointer. Proposed-By: Karel Zak <kzak@redhat.com> CC: Davidlohr Bueso <dave@gnu.org> Reference: http://marc.info/?l=util-linux-ng&m=133129570124003&w=2 Signed-off-by: Sami Kerola <kerolasa@iki.fi>
53 lines
977 B
C
53 lines
977 B
C
/*
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* Copyright (C) 2012 Sami Kerola <kerolasa@iki.fi>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "c.h"
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#include "fileutils.h"
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#include "pathnames.h"
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#include "xalloc.h"
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/* Create open temporary file in safe way. Please notice that the
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* file permissions are -rw------- by default. */
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int xmkstemp(char **tmpname)
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{
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char *localtmp;
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char *tmpenv;
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mode_t old_mode;
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int fd;
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tmpenv = getenv("TMPDIR");
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if (tmpenv)
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xasprintf(&localtmp, "%s/%s.XXXXXX", tmpenv,
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program_invocation_short_name);
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else
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xasprintf(&localtmp, "%s/%s.XXXXXX", _PATH_TMP,
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program_invocation_short_name);
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old_mode = umask(077);
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fd = mkstemp(localtmp);
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umask(old_mode);
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if (fd == -1) {
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free(localtmp);
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localtmp = NULL;
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}
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*tmpname = localtmp;
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return fd;
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}
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#ifdef TEST_PROGRAM
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int main(void)
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{
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FILE *f;
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char *tmpname;
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f = xfmkstemp(&tmpname);
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unlink(tmpname);
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free(tmpname);
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fclose(f);
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return EXIT_FAILURE;
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}
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#endif
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