refactor passwd file access code

this allows getpwnam and getpwuid to share code with the _r versions
in preparation for alternate backend support.

1 files changed, 12 insertions, 20 deletions

diff --git a/src/passwd/getpwent.c b/src/passwd/getpwent.c
index c655135e..f2bd516e 100644
--- a/src/passwd/getpwent.c
+++ b/src/passwd/getpwent.c
@@ -1,6 +1,9 @@
 #include "pwf.h"
 
 static FILE *f;
+static char *line;
+static struct passwd pw;
+static size_t size;
 
 void setpwent()
 {
@@ -12,34 +15,23 @@ weak_alias(setpwent, endpwent);
 
 struct passwd *getpwent()
 {
-	static char *line;
-	static struct passwd pw;
-	size_t size=0;
+	struct passwd *res;
 	if (!f) f = fopen("/etc/passwd", "rbe");
 	if (!f) return 0;
-	return __getpwent_a(f, &pw, &line, &size);
+	__getpwent_a(f, &pw, &line, &size, &res);
+	return res;
 }
 
 struct passwd *getpwuid(uid_t uid)
 {
-	struct passwd *pw;
-	int errno_saved;
-	setpwent();
-	while ((pw=getpwent()) && pw->pw_uid != uid);
-	errno_saved = errno;
-	endpwent();
-	errno = errno_saved;
-	return pw;
+	struct passwd *res;
+	__getpw_a(0, uid, &pw, &line, &size, &res);
+	return res;
 }
 
 struct passwd *getpwnam(const char *name)
 {
-	struct passwd *pw;
-	int errno_saved;
-	setpwent();
-	while ((pw=getpwent()) && strcmp(pw->pw_name, name));
-	errno_saved = errno;
-	endpwent();
-	errno = errno_saved;
-	return pw;
+	struct passwd *res;
+	__getpw_a(name, 0, &pw, &line, &size, &res);
+	return res;
 }