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Check return values of fprintf, fclose (this one is overdone I guess)

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and pw_db->close.
PR:		4202 (probably, I askd the submitter)
Obtained from:	OpenBSD
This commit is contained in:
Guido van Rooij 1998-02-15 22:31:40 +00:00
parent 5b4636a600
commit 1aa9837c94
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=33413
1 changed files with 12 additions and 7 deletions
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19
usr.sbin/pwd_mkdb/pwd_mkdb.c
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@ -42,7 +42,7 @@ static const char copyright[] =
static char sccsid[] = "@(#)pwd_mkdb.c 8.5 (Berkeley) 4/20/94";
#endif
static const char rcsid[] =
"$Id: pwd_mkdb.c,v 1.20 1997/10/10 06:27:07 charnier Exp $";
"$Id: pwd_mkdb.c,v 1.21 1998/01/10 17:27:28 wosch Exp $";
#endif /* not lint */
#include <sys/param.h>
@ -227,7 +227,8 @@ main(argc, argv)
} else {
methoduid = R_NOOVERWRITE;
}
(void)(pw_db->close)(pw_db);
if ((pw_db->close)(pw_db))
error("close pw_db");
method = 0;
} else {
dp = dbopen(buf,
@ -383,7 +384,8 @@ main(argc, argv)
}
/* Create original format password file entry */
if (Cflag && makeold) /* copy comments */
(void)fprintf(oldfp, "%s\n", line);
if (fprintf(oldfp, "%s\n", line) == EOF)
error("write old");
else if (makeold) {
char uidstr[20];
char gidstr[20];
@ -391,10 +393,11 @@ main(argc, argv)
snprintf(uidstr, sizeof(uidstr), "%d", pwd.pw_uid);
snprintf(gidstr, sizeof(gidstr), "%d", pwd.pw_gid);
(void)fprintf(oldfp, "%s:*:%s:%s:%s:%s:%s\n",
if (fprintf(oldfp, "%s:*:%s:%s:%s:%s:%s\n",
pwd.pw_name, pwd.pw_fields & _PWF_UID ? uidstr : "",
pwd.pw_fields & _PWF_GID ? gidstr : "",
pwd.pw_gecos, pwd.pw_dir, pwd.pw_shell);
pwd.pw_gecos, pwd.pw_dir, pwd.pw_shell) == EOF)
error("write old");
}
}
/* If YP enabled, set flag. */
@ -415,12 +418,14 @@ main(argc, argv)
error("close");
if (makeold) {
(void)fflush(oldfp);
(void)fclose(oldfp);
if (fclose(oldfp) == EOF)
error("close old");
}
/* Set master.passwd permissions, in case caller forgot. */
(void)fchmod(fileno(fp), S_IRUSR|S_IWUSR);
(void)fclose(fp);
if (fclose(fp) == EOF)
error("close fp");
/* Install as the real password files. */
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB);