modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/include/pwd.h (about)

     1  /* Copyright (C) 1991-2018 Free Software Foundation, Inc.
     2     This file is part of the GNU C Library.
     3  
     4     The GNU C Library is free software; you can redistribute it and/or
     5     modify it under the terms of the GNU Lesser General Public
     6     License as published by the Free Software Foundation; either
     7     version 2.1 of the License, or (at your option) any later version.
     8  
     9     The GNU C Library is distributed in the hope that it will be useful,
    10     but WITHOUT ANY WARRANTY; without even the implied warranty of
    11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12     Lesser General Public License for more details.
    13  
    14     You should have received a copy of the GNU Lesser General Public
    15     License along with the GNU C Library; if not, see
    16     <http://www.gnu.org/licenses/>.  */
    17  
    18  /*
    19   *	POSIX Standard: 9.2.2 User Database Access	<pwd.h>
    20   */
    21  
    22  #ifndef	_PWD_H
    23  #define	_PWD_H	1
    24  
    25  #include <features.h>
    26  
    27  __BEGIN_DECLS
    28  #include <bits/types.h>
    29  #define __need_size_t
    30  #include <stddef.h>
    31  #if defined __USE_XOPEN || defined __USE_XOPEN2K
    32  /* The Single Unix specification says that some more types are
    33     available here.  */
    34  # ifndef __gid_t_defined
    35  typedef __gid_t gid_t;
    36  #  define __gid_t_defined
    37  # endif
    38  
    39  # ifndef __uid_t_defined
    40  typedef __uid_t uid_t;
    41  #  define __uid_t_defined
    42  # endif
    43  #endif
    44  
    45  /* The passwd structure.  */
    46  struct passwd {
    47  	char *pw_name;		/* Username.  */
    48  	char *pw_passwd;	/* Password.  */
    49  	__uid_t pw_uid;		/* User ID.  */
    50  	__gid_t pw_gid;		/* Group ID.  */
    51  	char *pw_gecos;		/* Real name.  */
    52  	char *pw_dir;		/* Home directory.  */
    53  	char *pw_shell;		/* Shell program.  */
    54  };
    55  
    56  #ifdef __USE_MISC
    57  # include <bits/types/FILE.h>
    58  #endif
    59  
    60  #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
    61  /* Rewind the password-file stream.
    62  
    63     This function is a possible cancellation point and therefore not
    64     marked with __THROW.  */
    65  extern void setpwent(void);
    66  
    67  /* Close the password-file stream.
    68  
    69     This function is a possible cancellation point and therefore not
    70     marked with __THROW.  */
    71  extern void endpwent(void);
    72  
    73  /* Read an entry from the password-file stream, opening it if necessary.
    74  
    75     This function is a possible cancellation point and therefore not
    76     marked with __THROW.  */
    77  extern struct passwd *getpwent(void);
    78  #endif
    79  
    80  #ifdef	__USE_MISC
    81  /* Read an entry from STREAM.
    82  
    83     This function is not part of POSIX and therefore no official
    84     cancellation point.  But due to similarity with an POSIX interface
    85     or due to the implementation it is a cancellation point and
    86     therefore not marked with __THROW.  */
    87  extern struct passwd *fgetpwent(FILE * __stream) __nonnull((1));
    88  
    89  /* Write the given entry onto the given stream.
    90  
    91     This function is not part of POSIX and therefore no official
    92     cancellation point.  But due to similarity with an POSIX interface
    93     or due to the implementation it is a cancellation point and
    94     therefore not marked with __THROW.  */
    95  extern int putpwent(const struct passwd *__restrict __p, FILE * __restrict __f);
    96  #endif
    97  
    98  /* Search for an entry with a matching user ID.
    99  
   100     This function is a possible cancellation point and therefore not
   101     marked with __THROW.  */
   102  extern struct passwd *getpwuid(__uid_t __uid);
   103  
   104  /* Search for an entry with a matching username.
   105  
   106     This function is a possible cancellation point and therefore not
   107     marked with __THROW.  */
   108  extern struct passwd *getpwnam(const char *__name) __nonnull((1));
   109  
   110  #ifdef __USE_POSIX
   111  
   112  # ifdef __USE_MISC
   113  /* Reasonable value for the buffer sized used in the reentrant
   114     functions below.  But better use `sysconf'.  */
   115  #  define NSS_BUFLEN_PASSWD	1024
   116  # endif
   117  
   118  /* Reentrant versions of some of the functions above.
   119  
   120     PLEASE NOTE: the `getpwent_r' function is not (yet) standardized.
   121     The interface may change in later versions of this library.  But
   122     the interface is designed following the principals used for the
   123     other reentrant functions so the chances are good this is what the
   124     POSIX people would choose.  */
   125  
   126  # ifdef __USE_MISC
   127  /* This function is not part of POSIX and therefore no official
   128     cancellation point.  But due to similarity with an POSIX interface
   129     or due to the implementation it is a cancellation point and
   130     therefore not marked with __THROW.  */
   131  extern int getpwent_r(struct passwd *__restrict __resultbuf, char *__restrict __buffer, size_t __buflen, struct passwd **__restrict __result) __nonnull((1, 2, 4));
   132  # endif
   133  
   134  extern int getpwuid_r(__uid_t __uid, struct passwd *__restrict __resultbuf, char *__restrict __buffer, size_t __buflen, struct passwd **__restrict __result) __nonnull((2, 3, 5));
   135  
   136  extern int getpwnam_r(const char *__restrict __name, struct passwd *__restrict __resultbuf, char *__restrict __buffer, size_t __buflen, struct passwd **__restrict __result) __nonnull((1, 2, 3, 5));
   137  
   138  # ifdef	__USE_MISC
   139  /* Read an entry from STREAM.  This function is not standardized and
   140     probably never will.
   141  
   142     This function is not part of POSIX and therefore no official
   143     cancellation point.  But due to similarity with an POSIX interface
   144     or due to the implementation it is a cancellation point and
   145     therefore not marked with __THROW.  */
   146  extern int fgetpwent_r(FILE * __restrict __stream, struct passwd *__restrict __resultbuf, char *__restrict __buffer, size_t __buflen, struct passwd **__restrict __result) __nonnull((1, 2, 3, 5));
   147  # endif
   148  
   149  #endif				/* POSIX or reentrant */
   150  
   151  #ifdef __USE_GNU
   152  /* Re-construct the password-file line for the given uid
   153     in the given buffer.  This knows the format that the caller
   154     will expect, but this need not be the format of the password file.
   155  
   156     This function is not part of POSIX and therefore no official
   157     cancellation point.  But due to similarity with an POSIX interface
   158     or due to the implementation it is a cancellation point and
   159     therefore not marked with __THROW.  */
   160  extern int getpw(__uid_t __uid, char *__buffer);
   161  #endif
   162  
   163  __END_DECLS
   164  #endif				/* pwd.h  */