1 files changed, 129 insertions, 0 deletions
diff --git a/c/src/lib/libc/getpwent.c b/c/src/lib/libc/getpwent.c
new file mode 100644
index 0000000000..23a35f49bd
--- /dev/null
+++ b/c/src/lib/libc/getpwent.c
@@ -0,0 +1,129 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+static struct passwd pw_passwd;	/* password structure */
+static FILE *passwd_fp;
+
+static char logname[8];
+static char password[1024];
+static char comment[1024];
+static char gecos[1024];
+static char dir[1024];
+static char shell[1024];
+
+struct passwd *
+getpwnam (name)
+     const char *name;
+{
+  FILE *fp;
+  int uid, gid;
+  char buf[1024];
+
+  if ((fp = fopen ("/etc/passwd", "r")) == NULL)
+    {
+      return NULL;
+    }
+
+  while (fgets (buf, sizeof (buf), fp))
+    {
+      sscanf (buf, "%[^:]:%[^:]:%d:%d:%[^:]:%[^:]:%s\n",
+	      logname, password, &pw_passwd.pw_uid,
+	      &pw_passwd.pw_gid, comment, gecos,
+	      dir, shell);
+      pw_passwd.pw_name = logname;
+      pw_passwd.pw_passwd = password;
+      pw_passwd.pw_comment = comment;
+      pw_passwd.pw_gecos = gecos;
+      pw_passwd.pw_dir = dir;
+      pw_passwd.pw_shell = shell;
+
+      if (!strcmp (logname, name))
+	{
+	  fclose (fp);
+	  return &pw_passwd;
+	}
+    }
+  fclose (fp);
+  return NULL;
+}
+
+struct passwd *
+getpwuid (uid_t uid)
+{
+  FILE *fp;
+  char buf[1024];
+
+  if ((fp = fopen ("/etc/passwd", "r")) == NULL)
+    {
+      return NULL;
+    }
+
+  while (fgets (buf, sizeof (buf), fp))
+    {
+      sscanf (buf, "%[^:]:%[^:]:%d:%d:%[^:]:%[^:]:%s\n",
+	      logname, password, &pw_passwd.pw_uid,
+	      &pw_passwd.pw_gid, comment, gecos,
+	      dir, shell);
+      pw_passwd.pw_name = logname;
+      pw_passwd.pw_passwd = password;
+      pw_passwd.pw_comment = comment;
+      pw_passwd.pw_gecos = gecos;
+      pw_passwd.pw_dir = dir;
+      pw_passwd.pw_shell = shell;
+
+      if (uid == pw_passwd.pw_uid)
+	{
+	  fclose (fp);
+	  return &pw_passwd;
+	}
+    }
+  fclose (fp);
+  return NULL;
+}
+
+struct passwd *
+getpwent ()
+{
+  char buf[1024];
+
+  if (passwd_fp == NULL)
+    return NULL;
+
+  if (fgets (buf, sizeof (buf), passwd_fp) == NULL)
+    return NULL;
+
+  sscanf (buf, "%[^:]:%[^:]:%d:%d:%[^:]:%[^:]:%s\n",
+	  logname, password, &pw_passwd.pw_uid,
+	  &pw_passwd.pw_gid, comment, gecos,
+	  dir, shell);
+  pw_passwd.pw_name = logname;
+  pw_passwd.pw_passwd = password;
+  pw_passwd.pw_comment = comment;
+  pw_passwd.pw_gecos = gecos;
+  pw_passwd.pw_dir = dir;
+  pw_passwd.pw_shell = shell;
+
+  return &pw_passwd;
+}
+
+void
+setpwent ()
+{
+  if (passwd_fp != NULL)
+    fclose (passwd_fp);
+
+  passwd_fp = fopen ("/etc/passwd", "r");
+}
+
+void
+endpwent ()
+{
+  if (passwd_fp != NULL)
+    fclose (passwd_fp);
+}