Remove 'shadow' and merge into 'nss'

The majority of shadow routines are entry points for nss functionality.
This commit removes the 'shadow' subdirectory and moves all
functionality and tests to 'nss'.  References to shadow/ are accordingly
changed.
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 103 insertions, 0 deletions

diff --git a/nss/sgetspent_r.c b/nss/sgetspent_r.c
new file mode 100644
index 0000000000..cb51db7106
--- /dev/null
+++ b/nss/sgetspent_r.c
@@ -0,0 +1,103 @@
+/* Copyright (C) 1996-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <ctype.h>
+#include <errno.h>
+#include <shadow.h>
+#include <stdio.h>
+#include <string.h>
+
+/* Define a line parsing function using the common code
+   used in the nss_files module.  */
+
+#define STRUCTURE	spwd
+#define ENTNAME		spent
+struct spent_data {};
+
+/* Predicate which always returns false, needed below.  */
+#define FALSEP(arg) 0
+
+
+#include <nss/nss_files/files-parse.c>
+LINE_PARSER
+(,
+ STRING_FIELD (result->sp_namp, ISCOLON, 0);
+ if (line[0] == '\0'
+     && (result->sp_namp[0] == '+' || result->sp_namp[0] == '-'))
+   {
+     result->sp_pwdp = NULL;
+     result->sp_lstchg = 0;
+     result->sp_min = 0;
+     result->sp_max = 0;
+     result->sp_warn = -1l;
+     result->sp_inact = -1l;
+     result->sp_expire = -1l;
+     result->sp_flag = ~0ul;
+   }
+ else
+   {
+     STRING_FIELD (result->sp_pwdp, ISCOLON, 0);
+     INT_FIELD_MAYBE_NULL (result->sp_lstchg, ISCOLON, 0, 10, (long int) (int),
+			   (long int) -1);
+     INT_FIELD_MAYBE_NULL (result->sp_min, ISCOLON, 0, 10, (long int) (int),
+			   (long int) -1);
+     INT_FIELD_MAYBE_NULL (result->sp_max, ISCOLON, 0, 10, (long int) (int),
+			   (long int) -1);
+     while (isspace (*line))
+       ++line;
+     if (*line == '\0')
+       {
+	 /* The old form.  */
+	 result->sp_warn = -1l;
+	 result->sp_inact = -1l;
+	 result->sp_expire = -1l;
+	 result->sp_flag = ~0ul;
+       }
+     else
+       {
+	 INT_FIELD_MAYBE_NULL (result->sp_warn, ISCOLON, 0, 10,
+			       (long int) (int), (long int) -1);
+	 INT_FIELD_MAYBE_NULL (result->sp_inact, ISCOLON, 0, 10,
+			       (long int) (int), (long int) -1);
+	 INT_FIELD_MAYBE_NULL (result->sp_expire, ISCOLON, 0, 10,
+			       (long int) (int), (long int) -1);
+	 if (*line != '\0')
+	   INT_FIELD_MAYBE_NULL (result->sp_flag, FALSEP, 0, 10,
+				 (unsigned long int), ~0ul)
+	 else
+	   result->sp_flag = ~0ul;
+       }
+   }
+ )
+
+
+/* Read one shadow entry from the given stream.  */
+int
+__sgetspent_r (const char *string, struct spwd *resbuf, char *buffer,
+	       size_t buflen, struct spwd **result)
+{
+  buffer[buflen - 1] = '\0';
+  char *sp = strncpy (buffer, string, buflen);
+  if (buffer[buflen - 1] != '\0')
+    return ERANGE;
+
+  int parse_result = parse_line (sp, resbuf, NULL, 0, &errno);
+  *result = parse_result > 0 ? resbuf : NULL;
+
+  return *result == NULL ? errno : 0;
+}
+weak_alias (__sgetspent_r, sgetspent_r)