diff options
Diffstat (limited to 'REORG.TODO/pwd/fgetpwent_r.c')
| -rw-r--r-- | REORG.TODO/pwd/fgetpwent_r.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/REORG.TODO/pwd/fgetpwent_r.c b/REORG.TODO/pwd/fgetpwent_r.c new file mode 100644 index 0000000000..8aa8f69372 --- /dev/null +++ b/REORG.TODO/pwd/fgetpwent_r.c @@ -0,0 +1,110 @@ +/* Copyright (C) 1991-2017 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 + <http://www.gnu.org/licenses/>. */ + +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <pwd.h> + +#define flockfile(s) _IO_flockfile (s) +#define funlockfile(s) _IO_funlockfile (s) + +/* Define a line parsing function using the common code + used in the nss_files module. */ + +#define STRUCTURE passwd +#define ENTNAME pwent +struct pwent_data {}; + +#include <nss/nss_files/files-parse.c> +LINE_PARSER +(, + STRING_FIELD (result->pw_name, ISCOLON, 0); + if (line[0] == '\0' + && (result->pw_name[0] == '+' || result->pw_name[0] == '-')) + { + /* This a special case. We allow lines containing only a `+' sign + since this is used for nss_compat. All other services will + reject this entry later. Initialize all other fields now. */ + result->pw_passwd = NULL; + result->pw_uid = 0; + result->pw_gid = 0; + result->pw_gecos = NULL; + result->pw_dir = NULL; + result->pw_shell = NULL; + } + else + { + STRING_FIELD (result->pw_passwd, ISCOLON, 0); + if (result->pw_name[0] == '+' || result->pw_name[0] == '-') + { + INT_FIELD_MAYBE_NULL (result->pw_uid, ISCOLON, 0, 10, , 0) + INT_FIELD_MAYBE_NULL (result->pw_gid, ISCOLON, 0, 10, , 0) + } + else + { + INT_FIELD (result->pw_uid, ISCOLON, 0, 10,) + INT_FIELD (result->pw_gid, ISCOLON, 0, 10,) + } + STRING_FIELD (result->pw_gecos, ISCOLON, 0); + STRING_FIELD (result->pw_dir, ISCOLON, 0); + result->pw_shell = line; + } + ) + + +/* Read one entry from the given stream. */ +int +__fgetpwent_r (FILE *stream, struct passwd *resbuf, char *buffer, + size_t buflen, struct passwd **result) +{ + char *p; + + flockfile (stream); + do + { + buffer[buflen - 1] = '\xff'; + p = fgets_unlocked (buffer, buflen, stream); + if (p == NULL && feof_unlocked (stream)) + { + funlockfile (stream); + *result = NULL; + __set_errno (ENOENT); + return errno; + } + if (p == NULL || buffer[buflen - 1] != '\xff') + { + funlockfile (stream); + *result = NULL; + __set_errno (ERANGE); + return errno; + } + + /* Skip leading blanks. */ + while (isspace (*p)) + ++p; + } while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */ + /* Parse the line. If it is invalid, loop to + get the next line of the file to parse. */ + ! parse_line (p, resbuf, (void *) buffer, buflen, &errno)); + + funlockfile (stream); + + *result = resbuf; + return 0; +} +weak_alias (__fgetpwent_r, fgetpwent_r) |