pam_ldaphome: run initrc command as user.

* examples/usergitconfig: Documentation formatting change.
* lib/graypam.h (gray_2nrealloc): New function.
* lib/mem.c (gray_2nrealloc): New function.
* pam_fshadow/pam_fshadow.c (fgetpwent): Skip malformed entries.
* pam_ldaphome/pam_ldaphome.c (runas): New finction.
(run_prog): Switch to user privileges unless initrc-root is true.

* NEWS: Update.
* doc/pam-modules.texi: Update.
* doc/pam_ldaphome.8in: Update.

2 files changed, 19 insertions, 0 deletions

diff --git a/lib/graypam.h b/lib/graypam.h
index e6b68aa..2548c74 100644
--- a/lib/graypam.h
+++ b/lib/graypam.h
@@ -94,6 +94,7 @@ void *gray_malloc(size_t size);
 void *gray_zalloc(size_t size);
 void *gray_calloc(size_t count, size_t size);
 void *gray_realloc(void *ptr, size_t size);
+void *gray_2nrealloc(void *ptr, size_t *pcount, size_t elsiz);
 char *gray_strdup(const char *str);
 
 void gray_pam_delete(char *x);
diff --git a/lib/mem.c b/lib/mem.c
index f90195b..2db82e1 100644
--- a/lib/mem.c
+++ b/lib/mem.c
@@ -62,6 +62,24 @@ gray_realloc(void *ptr, size_t size)
 	return ptr;
 }
 
+void *
+gray_2nrealloc(void *ptr, size_t *pcount, size_t elsiz)
+{
+	size_t count = *pcount;
+
+	if (!ptr) {
+		if (!count) 
+			count = *pcount = 16;
+		return gray_calloc(count, elsiz);
+	}
+	if ((size_t)-1 / 2 / elsiz <= count)
+		gray_raise("Not enough memory");
+	count *= 2;
+	*pcount = count;
+	return gray_realloc(ptr, count * elsiz);
+}
+	
+
 char *
 gray_strdup(const char *str)
 {