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475 lines
15 KiB
C
475 lines
15 KiB
C
/* copypass.c - cpio copy pass sub-function.
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Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "filetypes.h"
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#include "system.h"
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#include "cpiohdr.h"
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#include "dstring.h"
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#include "extern.h"
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#ifndef HAVE_LCHOWN
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#define lchown chown
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#endif
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/* Copy files listed on the standard input into directory `directory_name'.
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If `link_flag', link instead of copying. */
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void
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process_copy_pass ()
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{
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dynamic_string input_name; /* Name of file from stdin. */
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dynamic_string output_name; /* Name of new file. */
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int dirname_len; /* Length of `directory_name'. */
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int res; /* Result of functions. */
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char *slash; /* For moving past slashes in input name. */
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struct utimbuf times; /* For resetting file times after copy. */
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struct stat in_file_stat; /* Stat record for input file. */
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struct stat out_file_stat; /* Stat record for output file. */
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int in_file_des; /* Input file descriptor. */
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int out_file_des; /* Output file descriptor. */
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int existing_dir; /* True if file is a dir & already exists. */
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#ifdef HPUX_CDF
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int cdf_flag;
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int cdf_char;
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#endif
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/* Initialize the copy pass. */
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dirname_len = strlen (directory_name);
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ds_init (&input_name, 128);
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ds_init (&output_name, dirname_len + 2);
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strcpy (output_name.ds_string, directory_name);
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output_name.ds_string[dirname_len] = '/';
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output_is_seekable = TRUE;
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/* Initialize this in case it has members we don't know to set. */
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bzero (×, sizeof (struct utimbuf));
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/* Copy files with names read from stdin. */
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while (ds_fgetstr (stdin, &input_name, name_end) != NULL)
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{
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int link_res = -1;
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/* Check for blank line and ignore it if found. */
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if (input_name.ds_string[0] == '\0')
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{
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error (0, 0, "blank line ignored");
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continue;
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}
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/* Check for current directory and ignore it if found. */
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if (input_name.ds_string[0] == '.'
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&& (input_name.ds_string[1] == '\0'
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|| (input_name.ds_string[1] == '/'
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&& input_name.ds_string[2] == '\0')))
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continue;
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if ((*xstat) (input_name.ds_string, &in_file_stat) < 0)
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{
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error (0, errno, "%s", input_name.ds_string);
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continue;
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}
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/* Make the name of the new file. */
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for (slash = input_name.ds_string; *slash == '/'; ++slash)
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;
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#ifdef HPUX_CDF
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/* For CDF's we add a 2nd `/' after all "hidden" directories.
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This kind of a kludge, but it's what we do when creating
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archives, and it's easier to do this than to separately
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keep track of which directories in a path are "hidden". */
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slash = add_cdf_double_slashes (slash);
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#endif
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ds_resize (&output_name, dirname_len + strlen (slash) + 2);
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strcpy (output_name.ds_string + dirname_len + 1, slash);
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existing_dir = FALSE;
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if (lstat (output_name.ds_string, &out_file_stat) == 0)
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{
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if (S_ISDIR (out_file_stat.st_mode)
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&& S_ISDIR (in_file_stat.st_mode))
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{
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/* If there is already a directory there that
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we are trying to create, don't complain about it. */
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existing_dir = TRUE;
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}
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else if (!unconditional_flag
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&& in_file_stat.st_mtime <= out_file_stat.st_mtime)
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{
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error (0, 0, "%s not created: newer or same age version exists",
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output_name.ds_string);
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continue; /* Go to the next file. */
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}
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else if (S_ISDIR (out_file_stat.st_mode)
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? rmdir (output_name.ds_string)
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: unlink (output_name.ds_string))
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{
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error (0, errno, "cannot remove current %s",
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output_name.ds_string);
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continue; /* Go to the next file. */
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}
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}
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/* Do the real copy or link. */
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if (S_ISREG (in_file_stat.st_mode))
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{
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#ifndef __MSDOS__
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/* Can the current file be linked to a another file?
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Set link_name to the original file name. */
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if (link_flag)
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/* User said to link it if possible. Try and link to
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the original copy. If that fails we'll still try
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and link to a copy we've already made. */
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link_res = link_to_name (output_name.ds_string,
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input_name.ds_string);
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if ( (link_res < 0) && (in_file_stat.st_nlink > 1) )
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link_res = link_to_maj_min_ino (output_name.ds_string,
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major (in_file_stat.st_dev),
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minor (in_file_stat.st_dev),
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in_file_stat.st_ino);
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#endif
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/* If the file was not linked, copy contents of file. */
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if (link_res < 0)
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{
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in_file_des = open (input_name.ds_string,
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O_RDONLY | O_BINARY, 0);
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if (in_file_des < 0)
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{
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error (0, errno, "%s", input_name.ds_string);
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continue;
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}
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out_file_des = open (output_name.ds_string,
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O_CREAT | O_WRONLY | O_BINARY, 0600);
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if (out_file_des < 0 && create_dir_flag)
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{
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create_all_directories (output_name.ds_string);
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out_file_des = open (output_name.ds_string,
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O_CREAT | O_WRONLY | O_BINARY, 0600);
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}
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if (out_file_des < 0)
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{
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error (0, errno, "%s", output_name.ds_string);
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close (in_file_des);
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continue;
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}
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copy_files_disk_to_disk (in_file_des, out_file_des, in_file_stat.st_size, input_name.ds_string);
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disk_empty_output_buffer (out_file_des);
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if (close (in_file_des) < 0)
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error (0, errno, "%s", input_name.ds_string);
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if (close (out_file_des) < 0)
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error (0, errno, "%s", output_name.ds_string);
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/* Set the attributes of the new file. */
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if (!no_chown_flag)
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if ((chown (output_name.ds_string,
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set_owner_flag ? set_owner : in_file_stat.st_uid,
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set_group_flag ? set_group : in_file_stat.st_gid) < 0)
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&& errno != EPERM)
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error (0, errno, "%s", output_name.ds_string);
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/* chown may have turned off some permissions we wanted. */
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if (chmod (output_name.ds_string, in_file_stat.st_mode) < 0)
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error (0, errno, "%s", output_name.ds_string);
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if (reset_time_flag)
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{
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times.actime = in_file_stat.st_atime;
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times.modtime = in_file_stat.st_mtime;
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if (utime (input_name.ds_string, ×) < 0)
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error (0, errno, "%s", input_name.ds_string);
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if (utime (output_name.ds_string, ×) < 0)
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error (0, errno, "%s", output_name.ds_string);
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}
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if (retain_time_flag)
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{
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times.actime = times.modtime = in_file_stat.st_mtime;
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if (utime (output_name.ds_string, ×) < 0)
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error (0, errno, "%s", output_name.ds_string);
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}
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}
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}
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else if (S_ISDIR (in_file_stat.st_mode))
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{
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#ifdef HPUX_CDF
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cdf_flag = 0;
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#endif
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if (!existing_dir)
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{
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#ifdef HPUX_CDF
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/* If the directory name ends in a + and is SUID,
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then it is a CDF. Strip the trailing + from the name
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before creating it. */
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cdf_char = strlen (output_name.ds_string) - 1;
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if ( (cdf_char > 0) &&
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(in_file_stat.st_mode & 04000) &&
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(output_name.ds_string [cdf_char] == '+') )
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{
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output_name.ds_string [cdf_char] = '\0';
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cdf_flag = 1;
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}
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#endif
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res = mkdir (output_name.ds_string, in_file_stat.st_mode);
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}
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else
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res = 0;
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if (res < 0 && create_dir_flag)
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{
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create_all_directories (output_name.ds_string);
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res = mkdir (output_name.ds_string, in_file_stat.st_mode);
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}
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if (res < 0)
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{
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/* In some odd cases where the output_name includes `.',
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the directory may have actually been created by
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create_all_directories(), so the mkdir will fail
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because the directory exists. If that's the case,
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don't complain about it. */
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if ( (errno != EEXIST) ||
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(lstat (output_name.ds_string, &out_file_stat) != 0) ||
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!(S_ISDIR (out_file_stat.st_mode) ) )
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{
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error (0, errno, "%s", output_name.ds_string);
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continue;
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}
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}
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if (!no_chown_flag)
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if ((chown (output_name.ds_string,
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set_owner_flag ? set_owner : in_file_stat.st_uid,
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set_group_flag ? set_group : in_file_stat.st_gid) < 0)
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&& errno != EPERM)
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error (0, errno, "%s", output_name.ds_string);
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/* chown may have turned off some permissions we wanted. */
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if (chmod (output_name.ds_string, in_file_stat.st_mode) < 0)
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error (0, errno, "%s", output_name.ds_string);
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#ifdef HPUX_CDF
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if (cdf_flag)
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/* Once we "hide" the directory with the chmod(),
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we have to refer to it using name+ isntead of name. */
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output_name.ds_string [cdf_char] = '+';
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#endif
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if (retain_time_flag)
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{
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times.actime = times.modtime = in_file_stat.st_mtime;
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if (utime (output_name.ds_string, ×) < 0)
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error (0, errno, "%s", output_name.ds_string);
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}
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}
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#ifndef __MSDOS__
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else if (S_ISCHR (in_file_stat.st_mode) ||
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S_ISBLK (in_file_stat.st_mode) ||
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#ifdef S_ISFIFO
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S_ISFIFO (in_file_stat.st_mode) ||
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#endif
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#ifdef S_ISSOCK
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S_ISSOCK (in_file_stat.st_mode) ||
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#endif
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0)
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{
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/* Can the current file be linked to a another file?
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Set link_name to the original file name. */
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if (link_flag)
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/* User said to link it if possible. */
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link_res = link_to_name (output_name.ds_string,
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input_name.ds_string);
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if ( (link_res < 0) && (in_file_stat.st_nlink > 1) )
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link_res = link_to_maj_min_ino (output_name.ds_string,
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major (in_file_stat.st_dev),
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minor (in_file_stat.st_dev),
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in_file_stat.st_ino);
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if (link_res < 0)
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{
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#ifdef S_ISFIFO
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if (S_ISFIFO (in_file_stat.st_mode))
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res = mkfifo (output_name.ds_string, in_file_stat.st_mode);
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else
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#endif
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res = mknod (output_name.ds_string, in_file_stat.st_mode,
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in_file_stat.st_rdev);
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if (res < 0 && create_dir_flag)
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{
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create_all_directories (output_name.ds_string);
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#ifdef S_ISFIFO
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if (S_ISFIFO (in_file_stat.st_mode))
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res = mkfifo (output_name.ds_string, in_file_stat.st_mode);
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else
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#endif
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res = mknod (output_name.ds_string, in_file_stat.st_mode,
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in_file_stat.st_rdev);
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}
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if (res < 0)
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{
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error (0, errno, "%s", output_name.ds_string);
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continue;
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}
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if (!no_chown_flag)
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if ((chown (output_name.ds_string,
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set_owner_flag ? set_owner : in_file_stat.st_uid,
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set_group_flag ? set_group : in_file_stat.st_gid) < 0)
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&& errno != EPERM)
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error (0, errno, "%s", output_name.ds_string);
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/* chown may have turned off some permissions we wanted. */
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if (chmod (output_name.ds_string, in_file_stat.st_mode) < 0)
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error (0, errno, "%s", output_name.ds_string);
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if (retain_time_flag)
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{
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times.actime = times.modtime = in_file_stat.st_mtime;
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if (utime (output_name.ds_string, ×) < 0)
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error (0, errno, "%s", output_name.ds_string);
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}
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}
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}
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#endif
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#ifdef S_ISLNK
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else if (S_ISLNK (in_file_stat.st_mode))
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{
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char *link_name;
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int link_size;
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link_name = (char *) xmalloc ((unsigned int) in_file_stat.st_size + 1);
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link_size = readlink (input_name.ds_string, link_name,
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in_file_stat.st_size);
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if (link_size < 0)
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{
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error (0, errno, "%s", input_name.ds_string);
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free (link_name);
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continue;
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}
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link_name[link_size] = '\0';
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res = UMASKED_SYMLINK (link_name, output_name.ds_string,
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in_file_stat.st_mode);
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if (res < 0 && create_dir_flag)
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{
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create_all_directories (output_name.ds_string);
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res = UMASKED_SYMLINK (link_name, output_name.ds_string,
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in_file_stat.st_mode);
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}
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if (res < 0)
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{
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error (0, errno, "%s", output_name.ds_string);
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free (link_name);
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continue;
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}
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/* Set the attributes of the new link. */
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if (!no_chown_flag)
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if ((lchown (output_name.ds_string,
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set_owner_flag ? set_owner : in_file_stat.st_uid,
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set_group_flag ? set_group : in_file_stat.st_gid) < 0)
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&& errno != EPERM)
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error (0, errno, "%s", output_name.ds_string);
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free (link_name);
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}
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#endif
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else
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{
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error (0, 0, "%s: unknown file type", input_name.ds_string);
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}
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if (verbose_flag)
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fprintf (stderr, "%s\n", output_name.ds_string);
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if (dot_flag)
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fputc ('.', stderr);
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}
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if (dot_flag)
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fputc ('\n', stderr);
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if (!quiet_flag)
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{
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res = (output_bytes + io_block_size - 1) / io_block_size;
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if (res == 1)
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fprintf (stderr, "1 block\n");
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else
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fprintf (stderr, "%d blocks\n", res);
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}
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}
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/* Try and create a hard link from FILE_NAME to another file
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with the given major/minor device number and inode. If no other
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file with the same major/minor/inode numbers is known, add this file
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to the list of known files and associated major/minor/inode numbers
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and return -1. If another file with the same major/minor/inode
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numbers is found, try and create another link to it using
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link_to_name, and return 0 for success and -1 for failure. */
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int
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link_to_maj_min_ino (file_name, st_dev_maj, st_dev_min, st_ino)
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char *file_name;
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int st_dev_maj;
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int st_dev_min;
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int st_ino;
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{
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int link_res;
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char *link_name;
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link_res = -1;
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#ifndef __MSDOS__
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/* Is the file a link to a previously copied file? */
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link_name = find_inode_file (st_ino,
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st_dev_maj,
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st_dev_min);
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if (link_name == NULL)
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add_inode (st_ino, file_name,
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st_dev_maj,
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st_dev_min);
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else
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link_res = link_to_name (file_name, link_name);
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#endif
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return link_res;
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}
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/* Try and create a hard link from LINK_NAME to LINK_TARGET. If
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`create_dir_flag' is set, any non-existent (parent) directories
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needed by LINK_NAME will be created. If the link is successfully
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created and `verbose_flag' is set, print "LINK_TARGET linked to LINK_NAME\n".
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If the link can not be created and `link_flag' is set, print
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"cannot link LINK_TARGET to LINK_NAME\n". Return 0 if the link
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is created, -1 otherwise. */
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int
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link_to_name (link_name, link_target)
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char *link_name;
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char *link_target;
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{
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int res;
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#ifdef __MSDOS__
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res = -1;
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#else /* not __MSDOS__ */
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res = link (link_target, link_name);
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if (res < 0 && create_dir_flag)
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{
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create_all_directories (link_name);
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res = link (link_target, link_name);
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}
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if (res == 0)
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{
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if (verbose_flag)
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error (0, 0, "%s linked to %s",
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link_target, link_name);
|
||
}
|
||
else if (link_flag)
|
||
{
|
||
error (0, errno, "cannot link %s to %s",
|
||
link_target, link_name);
|
||
}
|
||
#endif /* not __MSDOS__ */
|
||
return res;
|
||
}
|