[PATCH v3] shadow: Implement putspent

[Michael Forney <mforney@mforney.org>]

---
 src/passwd/fgetspent.c |  5 -----
 src/passwd/putspent.c  | 13 +++++++++++++
 2 files changed, 13 insertions(+), 5 deletions(-)
 create mode 100644 src/passwd/putspent.c

diff --git a/src/passwd/fgetspent.c b/src/passwd/fgetspent.c
index a9a3c97..3dda784 100644
--- a/src/passwd/fgetspent.c
+++ b/src/passwd/fgetspent.c
@@ -4,8 +4,3 @@ struct spwd *fgetspent(FILE *f)
 {
 	return 0;
 }
-
-int putspent(const struct spwd *sp, FILE *f)
-{
-	return -1;
-}
diff --git a/src/passwd/putspent.c b/src/passwd/putspent.c
new file mode 100644
index 0000000..55c41bb
--- /dev/null
+++ b/src/passwd/putspent.c
@@ -0,0 +1,13 @@
+#include <shadow.h>
+#include <stdio.h>
+
+#define NUM(n) ((n) == -1 ? 0 : -1), ((n) == -1 ? 0 : (n))
+#define STR(s) ((s) ? (s) : "")
+
+int putspent(const struct spwd *sp, FILE *f)
+{
+	return fprintf(f, "%s:%s:%.*ld:%.*ld:%.*ld:%.*ld:%.*ld:%.*ld:%.*lu\n",
+		STR(sp->sp_namp), STR(sp->sp_pwdp), NUM(sp->sp_lstchg),
+		NUM(sp->sp_min), NUM(sp->sp_max), NUM(sp->sp_warn),
+		NUM(sp->sp_inact), NUM(sp->sp_expire), NUM(sp->sp_flag)) < 0 ? -1 : 0;
+}
-- 
1.8.4.2