diff options
Diffstat (limited to 'sysdeps/generic')
| -rw-r--r-- | sysdeps/generic/bits/socket.h | 5 | ||||
| -rw-r--r-- | sysdeps/generic/endutxent.c (renamed from sysdeps/generic/bits/utmpx.h) | 27 | ||||
| -rw-r--r-- | sysdeps/generic/getutxent.c | 27 | ||||
| -rw-r--r-- | sysdeps/generic/getutxid.c | 27 | ||||
| -rw-r--r-- | sysdeps/generic/getutxline.c | 27 | ||||
| -rw-r--r-- | sysdeps/generic/longjmp.c | 10 | ||||
| -rw-r--r-- | sysdeps/generic/pututxline.c | 27 | ||||
| -rw-r--r-- | sysdeps/generic/setjmp.c | 6 | ||||
| -rw-r--r-- | sysdeps/generic/setutxent.c | 27 | ||||
| -rw-r--r-- | sysdeps/generic/strcasestr.c | 5 | ||||
| -rw-r--r-- | sysdeps/generic/updwtmp.c | 41 | ||||
| -rw-r--r-- | sysdeps/generic/updwtmpx.c | 27 | ||||
| -rw-r--r-- | sysdeps/generic/utmp_file.c | 472 | ||||
| -rw-r--r-- | sysdeps/generic/utmpxname.c | 27 |
14 files changed, 729 insertions, 26 deletions
diff --git a/sysdeps/generic/bits/socket.h b/sysdeps/generic/bits/socket.h index 5dc1e65370..01844bc143 100644 --- a/sysdeps/generic/bits/socket.h +++ b/sysdeps/generic/bits/socket.h @@ -17,6 +17,9 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#ifndef __BITS_SOCKET_H +#define __BITS_SOCKET_H 1 + #if !defined _SYS_SOCKET_H && !defined _NETINET_IN_H # error "Never include <bits/socket.h> directly; use <sys/socket.h> instead." #endif @@ -196,3 +199,5 @@ struct linger int l_onoff; /* Nonzero to linger on close. */ int l_linger; /* Time to linger. */ }; + +#endif /* bits/socket.h */ diff --git a/sysdeps/generic/bits/utmpx.h b/sysdeps/generic/endutxent.c index e22660f6d6..cd8d7e4122 100644 --- a/sysdeps/generic/bits/utmpx.h +++ b/sysdeps/generic/endutxent.c @@ -1,5 +1,6 @@ -/* Structures and definitions for the user accounting database. Generic/BSDish - Copyright (C) 1993, 1996, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as @@ -16,19 +17,11 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef _UTMPX_H -# error "Never include <bits/utmpx.h> directly; use <utmpx.h> instead." -#endif +#include <utmp.h> +#include <utmpx.h> - -#define __UT_NAMESIZE 8 -#define __UT_LINESIZE 8 -#define __UT_HOSTSIZE 16 - -struct utmpx - { - char ut_line[__UT_LINESIZE]; - char ut_name[__UT_NAMESIZE]; - char ut_host[__UT_HOSTSIZE]; - long int ut_time; - }; +void +endutxent (void) +{ + __endutent (); +} diff --git a/sysdeps/generic/getutxent.c b/sysdeps/generic/getutxent.c new file mode 100644 index 0000000000..f6f07d5c44 --- /dev/null +++ b/sysdeps/generic/getutxent.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <utmp.h> +#include <utmpx.h> + +struct utmpx * +getutxent (void) +{ + return (struct utmpx *) __getutent (); +} diff --git a/sysdeps/generic/getutxid.c b/sysdeps/generic/getutxid.c new file mode 100644 index 0000000000..d58f4c307d --- /dev/null +++ b/sysdeps/generic/getutxid.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <utmp.h> +#include <utmpx.h> + +struct utmpx * +getutxid (const struct utmpx *id) +{ + return (struct utmpx *) __getutid ((const struct utmp *) id); +} diff --git a/sysdeps/generic/getutxline.c b/sysdeps/generic/getutxline.c new file mode 100644 index 0000000000..4296ea615b --- /dev/null +++ b/sysdeps/generic/getutxline.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <utmp.h> +#include <utmpx.h> + +struct utmpx * +getutxline (const struct utmpx *line) +{ + return (struct utmpx *) __getutline ((const struct utmp *) line); +} diff --git a/sysdeps/generic/longjmp.c b/sysdeps/generic/longjmp.c index f46f1601c3..1a4850f1b8 100644 --- a/sysdeps/generic/longjmp.c +++ b/sysdeps/generic/longjmp.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 1994, 1995, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1991, 92, 94, 95, 97, 98 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 @@ -27,7 +27,7 @@ extern void _longjmp_unwind (jmp_buf env, int val); to the position specified in ENV, causing the setjmp call there to return VAL, or 1 if VAL is 0. */ void -longjmp (sigjmp_buf env, int val) +__libc_siglongjmp (sigjmp_buf env, int val) { /* Perform any cleanups needed by the frames being unwound. */ _longjmp_unwind (env, val); @@ -41,5 +41,7 @@ longjmp (sigjmp_buf env, int val) __longjmp (env[0].__jmpbuf, val ?: 1); } -weak_alias (longjmp, _longjmp) -weak_alias (longjmp, siglongjmp) +strong_alias (__libc_siglongjmp, __libc_longjmp) +weak_alias (__libc_siglongjmp, _longjmp) +weak_alias (__libc_siglongjmp, longjmp) +weak_alias (__libc_siglongjmp, siglongjmp) diff --git a/sysdeps/generic/pututxline.c b/sysdeps/generic/pututxline.c new file mode 100644 index 0000000000..d1246bc5a4 --- /dev/null +++ b/sysdeps/generic/pututxline.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <utmp.h> +#include <utmpx.h> + +struct utmpx * +pututxline (const struct utmpx *utmpx) +{ + return (struct utmpx *) __pututline ((const struct utmp *) utmpx); +} diff --git a/sysdeps/generic/setjmp.c b/sysdeps/generic/setjmp.c index 8b1dfa6a83..56230aabf7 100644 --- a/sysdeps/generic/setjmp.c +++ b/sysdeps/generic/setjmp.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1994, 1995, 1996, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1991, 94, 95, 96, 97, 98 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 @@ -22,7 +22,7 @@ /* Save the current program position in ENV and return 0. */ int -__sigsetjmp (jmp_buf env, int savemask) +__libc_sigsetjmp (jmp_buf env, int savemask) { /* Save the signal mask if requested. */ __sigjmp_save (env, savemask); @@ -32,6 +32,6 @@ __sigsetjmp (jmp_buf env, int savemask) return 0; } - +weak_alias (__libc_sigsetjmp, __sigsetjmp) stub_warning (__sigsetjmp) #include <stub-tag.h> diff --git a/sysdeps/generic/setutxent.c b/sysdeps/generic/setutxent.c new file mode 100644 index 0000000000..267a1bd7d1 --- /dev/null +++ b/sysdeps/generic/setutxent.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <utmp.h> +#include <utmpx.h> + +void +setutxent (void) +{ + return __setutent (); +} diff --git a/sysdeps/generic/strcasestr.c b/sysdeps/generic/strcasestr.c index ec8727d268..a5786fac58 100644 --- a/sysdeps/generic/strcasestr.c +++ b/sysdeps/generic/strcasestr.c @@ -1,5 +1,5 @@ /* Return the offset of one string within another. - Copyright (C) 1994, 1996, 1997 Free Software Foundation, Inc. + Copyright (C) 1994, 1996, 1997, 1998 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 @@ -38,7 +38,8 @@ typedef unsigned chartype; -#undef strstr +#undef strcasestr +#undef __strcasestr char * __strcasestr (phaystack, pneedle) diff --git a/sysdeps/generic/updwtmp.c b/sysdeps/generic/updwtmp.c new file mode 100644 index 0000000000..d6f29b1851 --- /dev/null +++ b/sysdeps/generic/updwtmp.c @@ -0,0 +1,41 @@ +/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <utmp.h> + +#include "utmp-private.h" + +#ifndef TRANSFORM_UTMP_FILE_NAME +# define TRANSFORM_UTMP_FILE_NAME(file_name) (file_name) +#endif + +void +__updwtmp (const char *wtmp_file, const struct utmp *utmp) +{ + /* See whether utmpd is running. */ + if ((*__libc_utmp_daemon_functions.updwtmp) (wtmp_file, utmp) < 0) + { + const char *file_name; + + file_name = TRANSFORM_UTMP_FILE_NAME (wtmp_file); + + (*__libc_utmp_file_functions.updwtmp) (file_name, utmp); + } +} +weak_alias (__updwtmp, updwtmp) diff --git a/sysdeps/generic/updwtmpx.c b/sysdeps/generic/updwtmpx.c new file mode 100644 index 0000000000..097bf380d2 --- /dev/null +++ b/sysdeps/generic/updwtmpx.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <utmp.h> +#include <utmpx.h> + +void +__updwtmpx (const char *wtmpx_file, const struct utmpx *utmpx) +{ + __updwtmp (wtmpx_file, (const struct utmp *) utmpx); +} diff --git a/sysdeps/generic/utmp_file.c b/sysdeps/generic/utmp_file.c new file mode 100644 index 0000000000..08675185ce --- /dev/null +++ b/sysdeps/generic/utmp_file.c @@ -0,0 +1,472 @@ +/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com> + and Paul Janzen <pcj@primenet.com>, 1996. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <assert.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <utmp.h> + +#include "utmp-private.h" + + +/* Descriptor for the file and position. */ +static int file_fd = -1; +static off_t file_offset; + +/* Cache for the last read entry. */ +static struct utmp last_entry; + + +/* Functions defined here. */ +static int setutent_file (void); +static int getutent_r_file (struct utmp *buffer, struct utmp **result); +static int getutid_r_file (const struct utmp *key, struct utmp *buffer, + struct utmp **result); +static int getutline_r_file (const struct utmp *key, struct utmp *buffer, + struct utmp **result); +static struct utmp *pututline_file (const struct utmp *data); +static void endutent_file (void); +static int updwtmp_file (const char *file, const struct utmp *utmp); + +/* Jump table for file functions. */ +struct utfuncs __libc_utmp_file_functions = +{ + setutent_file, + getutent_r_file, + getutid_r_file, + getutline_r_file, + pututline_file, + endutent_file, + updwtmp_file +}; + + +#ifndef TRANSFORM_UTMP_FILE_NAME +# define TRANSFORM_UTMP_FILE_NAME(file_name) (file_name) +#endif + +static int +setutent_file (void) +{ + if (file_fd < 0) + { + const char *file_name; + + file_name = TRANSFORM_UTMP_FILE_NAME (__libc_utmp_file_name); + + file_fd = open (file_name, O_RDWR); + if (file_fd == -1) + { + /* Hhm, read-write access did not work. Try read-only. */ + file_fd = open (file_name, O_RDONLY); + if (file_fd == -1) + return 0; + } + } + + lseek (file_fd, 0, SEEK_SET); + file_offset = 0; + +#if _HAVE_UT_TYPE - 0 + /* Make sure the entry won't match. */ + last_entry.ut_type = -1; +#endif + + return 1; +} + + +static int +getutent_r_file (struct utmp *buffer, struct utmp **result) +{ + ssize_t nbytes; + struct flock fl; /* Information struct for locking. */ + + assert (file_fd >= 0); + + if (file_offset == -1l) + { + /* Not available. */ + *result = NULL; + return -1; + } + + /* XXX The following is not perfect. Instead of locking the file itself + Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl> suggests to + use an extra locking file. */ + /* XXX I think using an extra locking file does not solve the + problems. Instead we should set an alarm, which causes fcntl to + fail, as in ../nis/lckcache.c. + Mark Kettenis <kettenis@phys.uva.nl>. */ + + /* Try to get the lock. */ + memset (&fl, '\0', sizeof (struct flock)); + fl.l_type = F_RDLCK; + fl.l_whence = SEEK_SET; + fcntl (file_fd, F_SETLK, &fl); + + /* Read the next entry. */ + nbytes = read (file_fd, &last_entry, sizeof (struct utmp)); + + /* And unlock the file. */ + fl.l_type = F_UNLCK; + fcntl (file_fd, F_SETLKW, &fl); + + if (nbytes != sizeof (struct utmp)) + { + file_offset = -1l; + *result = NULL; + return -1; + } + + /* Update position pointer. */ + file_offset += sizeof (struct utmp); + + memcpy (buffer, &last_entry, sizeof (struct utmp)); + *result = buffer; + + return 0; +} + + +static int +proc_utmp_eq (const struct utmp *entry, const struct utmp *match) +{ + return + ( +#if _HAVE_UT_TYPE - 0 + (entry->ut_type == INIT_PROCESS + || entry->ut_type == LOGIN_PROCESS + || entry->ut_type == USER_PROCESS + || entry->ut_type == DEAD_PROCESS) + && + (match->ut_type == INIT_PROCESS + || match->ut_type == LOGIN_PROCESS + || match->ut_type == USER_PROCESS + || match->ut_type == DEAD_PROCESS) + && +#endif +#if _HAVE_UT_ID - 0 + (entry->ut_id[0] && match->ut_id[0] + ? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0 + : strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0) +#else + strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0 +#endif + ); +} + +static int +internal_getut_r (const struct utmp *id, struct utmp *buffer) +{ + int result = -1; + struct flock fl; + + /* Try to get the lock. */ + memset (&fl, '\0', sizeof (struct flock)); + fl.l_type = F_RDLCK; + fl.l_whence = SEEK_SET; + fcntl (file_fd, F_SETLKW, &fl); + +#if _HAVE_UT_TYPE - 0 + if (id->ut_type == RUN_LVL || id->ut_type == BOOT_TIME + || id->ut_type == OLD_TIME || id->ut_type == NEW_TIME) + { + /* Search for next entry with type RUN_LVL, BOOT_TIME, + OLD_TIME, or NEW_TIME. */ + + while (1) + { + /* Read the next entry. */ + if (read (file_fd, buffer, sizeof (struct utmp)) + != sizeof (struct utmp)) + { + __set_errno (ESRCH); + file_offset = -1l; + goto unlock_return; + } + file_offset += sizeof (struct utmp); + + if (id->ut_type == buffer->ut_type) + break; + } + } + else +#endif /* _HAVE_UT_TYPE */ + { + /* Search for the next entry with the specified ID and with type + INIT_PROCESS, LOGIN_PROCESS, USER_PROCESS, or DEAD_PROCESS. */ + + while (1) + { + /* Read the next entry. */ + if (read (file_fd, buffer, sizeof (struct utmp)) + != sizeof (struct utmp)) + { + __set_errno (ESRCH); + file_offset = -1l; + goto unlock_return; + } + file_offset += sizeof (struct utmp); + + if (proc_utmp_eq (buffer, id)) + break; + } + } + + result = 0; + +unlock_return: + /* And unlock the file. */ + fl.l_type = F_UNLCK; + fcntl (file_fd, F_SETLK, &fl); + + return result; +} + + +/* For implementing this function we don't use the getutent_r function + because we can avoid the reposition on every new entry this way. */ +static int +getutid_r_file (const struct utmp *id, struct utmp *buffer, + struct utmp **result) +{ + assert (file_fd >= 0); + + if (file_offset == -1l) + { + *result = NULL; + return -1; + } + + if (internal_getut_r (id, &last_entry) < 0) + { + *result = NULL; + return -1; + } + + memcpy (buffer, &last_entry, sizeof (struct utmp)); + *result = buffer; + + return 0; +} + + +/* For implementing this function we don't use the getutent_r function + because we can avoid the reposition on every new entry this way. */ +static int +getutline_r_file (const struct utmp *line, struct utmp *buffer, + struct utmp **result) +{ + struct flock fl; + + assert (file_fd >= 0); + + if (file_offset == -1l) + { + *result = NULL; + return -1; + } + + /* Try to get the lock. */ + memset (&fl, '\0', sizeof (struct flock)); + fl.l_type = F_RDLCK; + fl.l_whence = SEEK_SET; + fcntl (file_fd, F_SETLKW, &fl); + + while (1) + { + /* Read the next entry. */ + if (read (file_fd, &last_entry, sizeof (struct utmp)) + != sizeof (struct utmp)) + { + __set_errno (ESRCH); + file_offset = -1l; + *result = NULL; + goto unlock_return; + } + file_offset += sizeof (struct utmp); + + /* Stop if we found a user or login entry. */ + if ( +#if _HAVE_UT_TYPE - 0 + (last_entry.ut_type == USER_PROCESS + || last_entry.ut_type == LOGIN_PROCESS) + && +#endif + !strncmp (line->ut_line, last_entry.ut_line, sizeof line->ut_line)) + break; + } + + memcpy (buffer, &last_entry, sizeof (struct utmp)); + *result = buffer; + +unlock_return: + /* And unlock the file. */ + fl.l_type = F_UNLCK; + fcntl (file_fd, F_SETLK, &fl); + + return ((*result == NULL) ? -1 : 0); +} + + +static struct utmp * +pututline_file (const struct utmp *data) +{ + struct flock fl; /* Information struct for locking. */ + struct utmp buffer; + struct utmp *pbuf; + int found; + + assert (file_fd >= 0); + + /* Find the correct place to insert the data. */ + if (file_offset > 0 + && ( +#if _HAVE_UT_TYPE - 0 + (last_entry.ut_type == data->ut_type + && (last_entry.ut_type == RUN_LVL + || last_entry.ut_type == BOOT_TIME + || last_entry.ut_type == OLD_TIME + || last_entry.ut_type == NEW_TIME)) + || +#endif + proc_utmp_eq (&last_entry, data))) + found = 1; + else + found = internal_getut_r (data, &buffer); + + /* Try to lock the file. */ + memset (&fl, '\0', sizeof (struct flock)); + fl.l_type = F_WRLCK; + fl.l_whence = SEEK_SET; + fcntl (file_fd, F_SETLK, &fl); + + if (found < 0) + { + /* We append the next entry. */ + file_offset = lseek (file_fd, 0, SEEK_END); + if (file_offset % sizeof (struct utmp) != 0) + { + file_offset -= file_offset % sizeof (struct utmp); + __ftruncate (file_fd, file_offset); + + if (lseek (file_fd, 0, SEEK_END) < 0) + { + pbuf = NULL; + goto unlock_return; + } + } + } + else + { + /* We replace the just read entry. */ + file_offset -= sizeof (struct utmp); + lseek (file_fd, file_offset, SEEK_SET); + } + + /* Write the new data. */ + if (write (file_fd, data, sizeof (struct utmp)) != sizeof (struct utmp)) + { + /* If we appended a new record this is only partially written. + Remove it. */ + if (found < 0) + (void) __ftruncate (file_fd, file_offset); + pbuf = NULL; + } + else + { + file_offset += sizeof (struct utmp); + pbuf = (struct utmp *) data; + } + + unlock_return: + /* And unlock the file. */ + fl.l_type = F_UNLCK; + fcntl (file_fd, F_SETLK, &fl); + + return pbuf; +} + + +static void +endutent_file (void) +{ + assert (file_fd >= 0); + + close (file_fd); + file_fd = -1; +} + + +static int +updwtmp_file (const char *file, const struct utmp *utmp) +{ + int result = -1; + struct flock fl; + off_t offset; + int fd; + + /* Open WTMP file. */ + fd = open (file, O_WRONLY); + if (fd < 0) + return -1; + + /* Try to get the lock. */ + memset (&fl, '\0', sizeof (struct flock)); + fl.l_type = F_WRLCK; + fl.l_whence = SEEK_SET; + fcntl (fd, F_SETLK, &fl); + + /* Remember original size of log file. */ + offset = lseek (fd, 0, SEEK_END); + if (offset % sizeof (struct utmp) != 0) + { + offset -= offset % sizeof (struct utmp); + __ftruncate (fd, offset); + + if (lseek (fd, 0, SEEK_END) < 0) + goto unlock_return; + } + + /* Write the entry. If we can't write all the bytes, reset the file + size back to the original size. That way, no partial entries + will remain. */ + if (write (fd, utmp, sizeof (struct utmp)) != sizeof (struct utmp)) + { + __ftruncate (fd, offset); + goto unlock_return; + } + + result = 0; + +unlock_return: + /* And unlock the file. */ + fl.l_type = F_UNLCK; + fcntl (fd, F_SETLKW, &fl); + + /* Close WTMP file. */ + close (fd); + + return result; +} diff --git a/sysdeps/generic/utmpxname.c b/sysdeps/generic/utmpxname.c new file mode 100644 index 0000000000..41c91937d0 --- /dev/null +++ b/sysdeps/generic/utmpxname.c @@ -0,0 +1,27 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <utmp.h> +#include <utmpx.h> + +int +utmpxname (const char *file) +{ + return __utmpname (file); +} |