diff options
Diffstat (limited to 'contrib/cpio/copyin.c')
| -rw-r--r-- | contrib/cpio/copyin.c | 1352 |
1 files changed, 1352 insertions, 0 deletions
diff --git a/contrib/cpio/copyin.c b/contrib/cpio/copyin.c new file mode 100644 index 0000000..1cc7e47 --- /dev/null +++ b/contrib/cpio/copyin.c @@ -0,0 +1,1352 @@ +/* copyin.c - extract or list a cpio archive + Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <stdio.h> +#include <sys/types.h> +#include <sys/stat.h> +#include "filetypes.h" +#include "system.h" +#include "cpiohdr.h" +#include "dstring.h" +#include "extern.h" +#include "defer.h" +#include "rmt.h" +#ifndef FNM_PATHNAME +#include <fnmatch.h> +#endif + +#ifndef HAVE_LCHOWN +#define lchown chown +#endif + +static void read_pattern_file (); +static void tape_skip_padding (); +static void defer_copyin (); +static void create_defered_links (); +static void create_final_defers (); + +/* Return 16-bit integer I with the bytes swapped. */ +#define swab_short(i) ((((i) << 8) & 0xff00) | (((i) >> 8) & 0x00ff)) + +/* Read the header, including the name of the file, from file + descriptor IN_DES into FILE_HDR. */ + +void +read_in_header (file_hdr, in_des) + struct new_cpio_header *file_hdr; + int in_des; +{ + long bytes_skipped = 0; /* Bytes of junk found before magic number. */ + + /* Search for a valid magic number. */ + + if (archive_format == arf_unknown) + { + char tmpbuf[512]; + int check_tar; + int peeked_bytes; + + while (archive_format == arf_unknown) + { + peeked_bytes = tape_buffered_peek (tmpbuf, in_des, 512); + if (peeked_bytes < 6) + error (1, 0, "premature end of archive"); + + if (!strncmp (tmpbuf, "070701", 6)) + archive_format = arf_newascii; + else if (!strncmp (tmpbuf, "070707", 6)) + archive_format = arf_oldascii; + else if (!strncmp (tmpbuf, "070702", 6)) + { + archive_format = arf_crcascii; + crc_i_flag = TRUE; + } + else if ((*((unsigned short *) tmpbuf) == 070707) || + (*((unsigned short *) tmpbuf) == swab_short ((unsigned short) 070707))) + archive_format = arf_binary; + else if (peeked_bytes >= 512 + && (check_tar = is_tar_header (tmpbuf))) + { + if (check_tar == 2) + archive_format = arf_ustar; + else + archive_format = arf_tar; + } + else + { + tape_buffered_read ((char *) tmpbuf, in_des, 1L); + ++bytes_skipped; + } + } + } + + if (archive_format == arf_tar || archive_format == arf_ustar) + { + if (append_flag) + last_header_start = input_bytes - io_block_size + + (in_buff - input_buffer); + if (bytes_skipped > 0) + error (0, 0, "warning: skipped %ld bytes of junk", bytes_skipped); + read_in_tar_header (file_hdr, in_des); + return; + } + + file_hdr->c_tar_linkname = NULL; + + tape_buffered_read ((char *) file_hdr, in_des, 6L); + while (1) + { + if (append_flag) + last_header_start = input_bytes - io_block_size + + (in_buff - input_buffer) - 6; + if (archive_format == arf_newascii + && !strncmp ((char *) file_hdr, "070701", 6)) + { + if (bytes_skipped > 0) + error (0, 0, "warning: skipped %ld bytes of junk", bytes_skipped); + read_in_new_ascii (file_hdr, in_des); + break; + } + if (archive_format == arf_crcascii + && !strncmp ((char *) file_hdr, "070702", 6)) + { + if (bytes_skipped > 0) + error (0, 0, "warning: skipped %ld bytes of junk", bytes_skipped); + read_in_new_ascii (file_hdr, in_des); + break; + } + if ( (archive_format == arf_oldascii || archive_format == arf_hpoldascii) + && !strncmp ((char *) file_hdr, "070707", 6)) + { + if (bytes_skipped > 0) + error (0, 0, "warning: skipped %ld bytes of junk", bytes_skipped); + read_in_old_ascii (file_hdr, in_des); + break; + } + if ( (archive_format == arf_binary || archive_format == arf_hpbinary) + && (file_hdr->c_magic == 070707 + || file_hdr->c_magic == swab_short ((unsigned short) 070707))) + { + /* Having to skip 1 byte because of word alignment is normal. */ + if (bytes_skipped > 0) + error (0, 0, "warning: skipped %ld bytes of junk", bytes_skipped); + read_in_binary (file_hdr, in_des); + break; + } + bytes_skipped++; + bcopy ((char *) file_hdr + 1, (char *) file_hdr, 5); + tape_buffered_read ((char *) file_hdr + 5, in_des, 1L); + } +} + +/* Fill in FILE_HDR by reading an old-format ASCII format cpio header from + file descriptor IN_DES, except for the magic number, which is + already filled in. */ + +void +read_in_old_ascii (file_hdr, in_des) + struct new_cpio_header *file_hdr; + int in_des; +{ + char ascii_header[78]; + unsigned long dev; + unsigned long rdev; + + tape_buffered_read (ascii_header, in_des, 70L); + ascii_header[70] = '\0'; + sscanf (ascii_header, + "%6lo%6lo%6lo%6lo%6lo%6lo%6lo%11lo%6lo%11lo", + &dev, &file_hdr->c_ino, + &file_hdr->c_mode, &file_hdr->c_uid, &file_hdr->c_gid, + &file_hdr->c_nlink, &rdev, &file_hdr->c_mtime, + &file_hdr->c_namesize, &file_hdr->c_filesize); + file_hdr->c_dev_maj = major (dev); + file_hdr->c_dev_min = minor (dev); + file_hdr->c_rdev_maj = major (rdev); + file_hdr->c_rdev_min = minor (rdev); + + /* Read file name from input. */ + if (file_hdr->c_name != NULL) + free (file_hdr->c_name); + file_hdr->c_name = (char *) xmalloc (file_hdr->c_namesize + 1); + tape_buffered_read (file_hdr->c_name, in_des, (long) file_hdr->c_namesize); +#ifndef __MSDOS__ + /* HP/UX cpio creates archives that look just like ordinary archives, + but for devices it sets major = 0, minor = 1, and puts the + actual major/minor number in the filesize field. See if this + is an HP/UX cpio archive, and if so fix it. We have to do this + here because process_copy_in() assumes filesize is always 0 + for devices. */ + switch (file_hdr->c_mode & CP_IFMT) + { + case CP_IFCHR: + case CP_IFBLK: +#ifdef CP_IFSOCK + case CP_IFSOCK: +#endif +#ifdef CP_IFIFO + case CP_IFIFO: +#endif + if (file_hdr->c_filesize != 0 + && file_hdr->c_rdev_maj == 0 + && file_hdr->c_rdev_min == 1) + { + file_hdr->c_rdev_maj = major (file_hdr->c_filesize); + file_hdr->c_rdev_min = minor (file_hdr->c_filesize); + file_hdr->c_filesize = 0; + } + break; + default: + break; + } +#endif /* __MSDOS__ */ +} + +/* Fill in FILE_HDR by reading a new-format ASCII format cpio header from + file descriptor IN_DES, except for the magic number, which is + already filled in. */ + +void +read_in_new_ascii (file_hdr, in_des) + struct new_cpio_header *file_hdr; + int in_des; +{ + char ascii_header[112]; + + tape_buffered_read (ascii_header, in_des, 104L); + ascii_header[104] = '\0'; + sscanf (ascii_header, + "%8lx%8lx%8lx%8lx%8lx%8lx%8lx%8lx%8lx%8lx%8lx%8lx%8lx", + &file_hdr->c_ino, &file_hdr->c_mode, &file_hdr->c_uid, + &file_hdr->c_gid, &file_hdr->c_nlink, &file_hdr->c_mtime, + &file_hdr->c_filesize, &file_hdr->c_dev_maj, &file_hdr->c_dev_min, + &file_hdr->c_rdev_maj, &file_hdr->c_rdev_min, &file_hdr->c_namesize, + &file_hdr->c_chksum); + /* Read file name from input. */ + if (file_hdr->c_name != NULL) + free (file_hdr->c_name); + file_hdr->c_name = (char *) xmalloc (file_hdr->c_namesize); + tape_buffered_read (file_hdr->c_name, in_des, (long) file_hdr->c_namesize); + + /* In SVR4 ASCII format, the amount of space allocated for the header + is rounded up to the next long-word, so we might need to drop + 1-3 bytes. */ + tape_skip_padding (in_des, file_hdr->c_namesize + 110); +} + +/* Fill in FILE_HDR by reading a binary format cpio header from + file descriptor IN_DES, except for the first 6 bytes (the magic + number, device, and inode number), which are already filled in. */ + +void +read_in_binary (file_hdr, in_des) + struct new_cpio_header *file_hdr; + int in_des; +{ + struct old_cpio_header short_hdr; + + /* Copy the data into the short header, then later transfer + it into the argument long header. */ + short_hdr.c_dev = ((struct old_cpio_header *) file_hdr)->c_dev; + short_hdr.c_ino = ((struct old_cpio_header *) file_hdr)->c_ino; + tape_buffered_read (((char *) &short_hdr) + 6, in_des, 20L); + + /* If the magic number is byte swapped, fix the header. */ + if (file_hdr->c_magic == swab_short ((unsigned short) 070707)) + { + static int warned = 0; + + /* Alert the user that they might have to do byte swapping on + the file contents. */ + if (warned == 0) + { + error (0, 0, "warning: archive header has reverse byte-order"); + warned = 1; + } + swab_array ((char *) &short_hdr, 13); + } + + file_hdr->c_dev_maj = major (short_hdr.c_dev); + file_hdr->c_dev_min = minor (short_hdr.c_dev); + file_hdr->c_ino = short_hdr.c_ino; + file_hdr->c_mode = short_hdr.c_mode; + file_hdr->c_uid = short_hdr.c_uid; + file_hdr->c_gid = short_hdr.c_gid; + file_hdr->c_nlink = short_hdr.c_nlink; + file_hdr->c_rdev_maj = major (short_hdr.c_rdev); + file_hdr->c_rdev_min = minor (short_hdr.c_rdev); + file_hdr->c_mtime = (unsigned long) short_hdr.c_mtimes[0] << 16 + | short_hdr.c_mtimes[1]; + + file_hdr->c_namesize = short_hdr.c_namesize; + file_hdr->c_filesize = (unsigned long) short_hdr.c_filesizes[0] << 16 + | short_hdr.c_filesizes[1]; + + /* Read file name from input. */ + if (file_hdr->c_name != NULL) + free (file_hdr->c_name); + file_hdr->c_name = (char *) xmalloc (file_hdr->c_namesize); + tape_buffered_read (file_hdr->c_name, in_des, (long) file_hdr->c_namesize); + + /* In binary mode, the amount of space allocated in the header for + the filename is `c_namesize' rounded up to the next short-word, + so we might need to drop a byte. */ + if (file_hdr->c_namesize % 2) + tape_toss_input (in_des, 1L); + +#ifndef __MSDOS__ + /* HP/UX cpio creates archives that look just like ordinary archives, + but for devices it sets major = 0, minor = 1, and puts the + actual major/minor number in the filesize field. See if this + is an HP/UX cpio archive, and if so fix it. We have to do this + here because process_copy_in() assumes filesize is always 0 + for devices. */ + switch (file_hdr->c_mode & CP_IFMT) + { + case CP_IFCHR: + case CP_IFBLK: +#ifdef CP_IFSOCK + case CP_IFSOCK: +#endif +#ifdef CP_IFIFO + case CP_IFIFO: +#endif + if (file_hdr->c_filesize != 0 + && file_hdr->c_rdev_maj == 0 + && file_hdr->c_rdev_min == 1) + { + file_hdr->c_rdev_maj = major (file_hdr->c_filesize); + file_hdr->c_rdev_min = minor (file_hdr->c_filesize); + file_hdr->c_filesize = 0; + } + break; + default: + break; + } +#endif /* __MSDOS__ */ +} + +/* Exchange the bytes of each element of the array of COUNT shorts + starting at PTR. */ + +void +swab_array (ptr, count) + char *ptr; + int count; +{ + char tmp; + + while (count-- > 0) + { + tmp = *ptr; + *ptr = *(ptr + 1); + ++ptr; + *ptr = tmp; + ++ptr; + } +} + +/* Current time for verbose table. */ +static time_t current_time; + +/* Read the collection from standard input and create files + in the file system. */ + +void +process_copy_in () +{ + char done = FALSE; /* True if trailer reached. */ + int res; /* Result of various function calls. */ + dynamic_string new_name; /* New file name for rename option. */ + FILE *tty_in; /* Interactive file for rename option. */ + FILE *tty_out; /* Interactive file for rename option. */ + FILE *rename_in; /* Batch file for rename option. */ + char *str_res; /* Result for string function. */ + struct utimbuf times; /* For setting file times. */ + struct stat file_stat; /* Output file stat record. */ + struct new_cpio_header file_hdr; /* Output header information. */ + int out_file_des; /* Output file descriptor. */ + int in_file_des; /* Input file descriptor. */ + char skip_file; /* Flag for use with patterns. */ + int existing_dir; /* True if file is a dir & already exists. */ + int i; /* Loop index variable. */ + char *link_name = NULL; /* Name of hard and symbolic links. */ +#ifdef HPUX_CDF + int cdf_flag; /* True if file is a CDF. */ + int cdf_char; /* Index of `+' char indicating a CDF. */ +#endif + + /* Initialize the copy in. */ + if (pattern_file_name) + read_pattern_file (); + file_hdr.c_name = NULL; + ds_init (&new_name, 128); + /* Initialize this in case it has members we don't know to set. */ + bzero (×, sizeof (struct utimbuf)); + + if (rename_batch_file) + { + rename_in = fopen (rename_batch_file, "r"); + if (rename_in == NULL) + error (2, errno, CONSOLE); + } + else if (rename_flag) + { + /* Open interactive file pair for rename operation. */ + tty_in = fopen (CONSOLE, "r"); + if (tty_in == NULL) + error (2, errno, CONSOLE); + tty_out = fopen (CONSOLE, "w"); + if (tty_out == NULL) + error (2, errno, CONSOLE); + } + + /* Get date and time if needed for processing the table option. */ + if (table_flag && verbose_flag) + time (¤t_time); + +#ifdef __MSDOS__ + setmode (archive_des, O_BINARY); +#endif + /* Check whether the input file might be a tape. */ + in_file_des = archive_des; + if (_isrmt (in_file_des)) + { + input_is_special = 1; + input_is_seekable = 0; + } + else + { + if (fstat (in_file_des, &file_stat)) + error (1, errno, "standard input is closed"); + input_is_special = +#ifdef S_ISBLK + S_ISBLK (file_stat.st_mode) || +#endif + S_ISCHR (file_stat.st_mode); + input_is_seekable = S_ISREG (file_stat.st_mode); + } + output_is_seekable = TRUE; + + /* While there is more input in the collection, process the input. */ + while (!done) + { + link_name = NULL; + swapping_halfwords = swapping_bytes = FALSE; + + /* Start processing the next file by reading the header. */ + read_in_header (&file_hdr, in_file_des); + +#ifdef DEBUG_CPIO + if (debug_flag) + { + struct new_cpio_header *h; + h = &file_hdr; + fprintf (stderr, + "magic = 0%o, ino = %d, mode = 0%o, uid = %d, gid = %d\n", + h->c_magic, h->c_ino, h->c_mode, h->c_uid, h->c_gid); + fprintf (stderr, + "nlink = %d, mtime = %d, filesize = %d, dev_maj = 0x%x\n", + h->c_nlink, h->c_mtime, h->c_filesize, h->c_dev_maj); + fprintf (stderr, + "dev_min = 0x%x, rdev_maj = 0x%x, rdev_min = 0x%x, namesize = %d\n", + h->c_dev_min, h->c_rdev_maj, h->c_rdev_min, h->c_namesize); + fprintf (stderr, + "chksum = %d, name = \"%s\", tar_linkname = \"%s\"\n", + h->c_chksum, h->c_name, + h->c_tar_linkname ? h->c_tar_linkname : "(null)" ); + + } +#endif + /* Is this the header for the TRAILER file? */ + if (strcmp ("TRAILER!!!", file_hdr.c_name) == 0) + { + done = TRUE; + break; + } + + /* Do we have to ignore absolute paths, and if so, does the filename + have an absolute path? */ + if (no_abs_paths_flag && file_hdr.c_name && file_hdr.c_name [0] == '/') + { + char *p; + + p = file_hdr.c_name; + while (*p == '/') + ++p; + if (*p == '\0') + { + strcpy (file_hdr.c_name, "."); + } + else + { + char *non_abs_name; + + non_abs_name = (char *) xmalloc (strlen (p) + 1); + strcpy (non_abs_name, p); + free (file_hdr.c_name); + file_hdr.c_name = non_abs_name; + } + } + + /* Does the file name match one of the given patterns? */ + if (num_patterns <= 0) + skip_file = FALSE; + else + { + skip_file = copy_matching_files; + for (i = 0; i < num_patterns + && skip_file == copy_matching_files; i++) + { + if (fnmatch (save_patterns[i], file_hdr.c_name, 0) == 0) + skip_file = !copy_matching_files; + } + } + + if (skip_file) + { + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + } + else if (table_flag) + { + if (verbose_flag) + { +#ifdef CP_IFLNK + if ((file_hdr.c_mode & CP_IFMT) == CP_IFLNK) + { + if (archive_format != arf_tar && archive_format != arf_ustar) + { + link_name = (char *) xmalloc ((unsigned int) file_hdr.c_filesize + 1); + link_name[file_hdr.c_filesize] = '\0'; + tape_buffered_read (link_name, in_file_des, file_hdr.c_filesize); + long_format (&file_hdr, link_name); + free (link_name); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + continue; + } + else + { + long_format (&file_hdr, file_hdr.c_tar_linkname); + continue; + } + } + else +#endif + long_format (&file_hdr, (char *) 0); + } + else + printf ("%s\n", file_hdr.c_name); + + crc = 0; + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + if (only_verify_crc_flag) + { +#ifdef CP_IFLNK + if ((file_hdr.c_mode & CP_IFMT) == CP_IFLNK) + continue; /* links don't have a checksum */ +#endif + if (crc != file_hdr.c_chksum) + error (0, 0, "%s: checksum error (0x%x, should be 0x%x)", + file_hdr.c_name, crc, file_hdr.c_chksum); + } + } + else if (append_flag) + { + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + } + else if (only_verify_crc_flag) + { +#ifdef CP_IFLNK + if ((file_hdr.c_mode & CP_IFMT) == CP_IFLNK) + { + if (archive_format != arf_tar && archive_format != arf_ustar) + { + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + continue; + } + } +#endif + crc = 0; + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + if (crc != file_hdr.c_chksum) + error (0, 0, "%s: checksum error (0x%x, should be 0x%x)", + file_hdr.c_name, crc, file_hdr.c_chksum); + } + else + { + /* Copy the input file into the directory structure. */ + + /* Do we need to rename the file? */ + if (rename_flag || rename_batch_file) + { + if (rename_flag) + { + fprintf (tty_out, "rename %s -> ", file_hdr.c_name); + fflush (tty_out); + str_res = ds_fgets (tty_in, &new_name); + } + else + { + str_res = ds_fgetstr (rename_in, &new_name, '\n'); + } + if (str_res == NULL || str_res[0] == 0) + { + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + continue; + } + else + file_hdr.c_name = xstrdup (new_name.ds_string); + } + + /* See if the file already exists. */ + existing_dir = FALSE; + if (lstat (file_hdr.c_name, &file_stat) == 0) + { + if (S_ISDIR (file_stat.st_mode) + && ((file_hdr.c_mode & CP_IFMT) == CP_IFDIR)) + { + /* If there is already a directory there that + we are trying to create, don't complain about + it. */ + existing_dir = TRUE; + } + else if (!unconditional_flag + && file_hdr.c_mtime <= file_stat.st_mtime) + { + error (0, 0, "%s not created: newer or same age version exists", + file_hdr.c_name); + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + continue; /* Go to the next file. */ + } + else if (S_ISDIR (file_stat.st_mode) + ? rmdir (file_hdr.c_name) + : unlink (file_hdr.c_name)) + { + error (0, errno, "cannot remove current %s", + file_hdr.c_name); + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + continue; /* Go to the next file. */ + } + } + + /* Do the real copy or link. */ + switch (file_hdr.c_mode & CP_IFMT) + { + case CP_IFREG: +#ifndef __MSDOS__ + /* Can the current file be linked to a previously copied file? */ + if (file_hdr.c_nlink > 1 && (archive_format == arf_newascii + || archive_format == arf_crcascii) ) + { + int link_res; + if (file_hdr.c_filesize == 0) + { + /* The newc and crc formats store multiply linked copies + of the same file in the archive only once. The + actual data is attached to the last link in the + archive, and the other links all have a filesize + of 0. Since this file has multiple links and a + filesize of 0, its data is probably attatched to + another file in the archive. Save the link, and + process it later when we get the actual data. We + can't just create it with length 0 and add the + data later, in case the file is readonly. We still + lose if its parent directory is readonly (and we aren't + running as root), but there's nothing we can do about + that. */ + defer_copyin (&file_hdr); + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + break; + } + /* If the file has data (filesize != 0), then presumably + any other links have already been defer_copyin'ed(), + but GNU cpio version 2.0-2.2 didn't do that, so we + still have to check for links here (and also in case + the archive was created and later appeneded to). */ + link_res = link_to_maj_min_ino (file_hdr.c_name, + file_hdr.c_dev_maj, file_hdr.c_dev_maj, + file_hdr.c_ino); + if (link_res == 0) + { + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + break; + } + } + else if (file_hdr.c_nlink > 1 && archive_format != arf_tar + && archive_format != arf_ustar) + { + int link_res; + link_res = link_to_maj_min_ino (file_hdr.c_name, + file_hdr.c_dev_maj, file_hdr.c_dev_maj, + file_hdr.c_ino); + if (link_res == 0) + { + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + break; + } + } + else if ((archive_format == arf_tar || archive_format == arf_ustar) + && file_hdr.c_tar_linkname && + file_hdr.c_tar_linkname[0] != '\0') + { + int link_res; + link_res = link_to_name (file_hdr.c_name, + file_hdr.c_tar_linkname); + if (link_res < 0) + { + error (0, errno, "cannot link %s to %s", + file_hdr.c_tar_linkname, file_hdr.c_name); + } + break; + } +#endif + + /* If not linked, copy the contents of the file. */ + if (link_name == NULL) + { + out_file_des = open (file_hdr.c_name, + O_CREAT | O_WRONLY | O_BINARY, 0600); + if (out_file_des < 0 && create_dir_flag) + { + create_all_directories (file_hdr.c_name); + out_file_des = open (file_hdr.c_name, + O_CREAT | O_WRONLY | O_BINARY, + 0600); + } + if (out_file_des < 0) + { + error (0, errno, "%s", file_hdr.c_name); + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + continue; + } + + crc = 0; + if (swap_halfwords_flag) + { + if ((file_hdr.c_filesize % 4) == 0) + swapping_halfwords = TRUE; + else + error (0, 0, "cannot swap halfwords of %s: odd number of halfwords", + file_hdr.c_name); + } + if (swap_bytes_flag) + { + if ((file_hdr.c_filesize % 2) == 0) + swapping_bytes = TRUE; + else + error (0, 0, "cannot swap bytes of %s: odd number of bytes", + file_hdr.c_name); + } + copy_files_tape_to_disk (in_file_des, out_file_des, file_hdr.c_filesize); + disk_empty_output_buffer (out_file_des); + if (close (out_file_des) < 0) + error (0, errno, "%s", file_hdr.c_name); + + if (archive_format == arf_crcascii) + { + if (crc != file_hdr.c_chksum) + error (0, 0, "%s: checksum error (0x%x, should be 0x%x)", + file_hdr.c_name, crc, file_hdr.c_chksum); + } + /* File is now copied; set attributes. */ + if (!no_chown_flag) + if ((chown (file_hdr.c_name, + set_owner_flag ? set_owner : file_hdr.c_uid, + set_group_flag ? set_group : file_hdr.c_gid) < 0) + && errno != EPERM) + error (0, errno, "%s", file_hdr.c_name); + /* chown may have turned off some permissions we wanted. */ + if (chmod (file_hdr.c_name, (int) file_hdr.c_mode) < 0) + error (0, errno, "%s", file_hdr.c_name); + if (retain_time_flag) + { + times.actime = times.modtime = file_hdr.c_mtime; + if (utime (file_hdr.c_name, ×) < 0) + error (0, errno, "%s", file_hdr.c_name); + } + tape_skip_padding (in_file_des, file_hdr.c_filesize); + if (file_hdr.c_nlink > 1 && (archive_format == arf_newascii + || archive_format == arf_crcascii) ) + { + /* (see comment above for how the newc and crc formats + store multiple links). Now that we have the data + for this file, create any other links to it which + we defered. */ + create_defered_links (&file_hdr); + } + } + break; + + case CP_IFDIR: + /* Strip any trailing `/'s off the filename; tar puts + them on. We might as well do it here in case anybody + else does too, since they cause strange things to happen. */ + strip_trailing_slashes (file_hdr.c_name); + + /* Ignore the current directory. It must already exist, + and we don't want to change its permission, ownership + or time. */ + if (file_hdr.c_name[0] == '.' && file_hdr.c_name[1] == '\0') + break; + +#ifdef HPUX_CDF + cdf_flag = 0; +#endif + if (!existing_dir) + + { +#ifdef HPUX_CDF + /* If the directory name ends in a + and is SUID, + then it is a CDF. Strip the trailing + from + the name before creating it. */ + cdf_char = strlen (file_hdr.c_name) - 1; + if ( (cdf_char > 0) && + (file_hdr.c_mode & 04000) && + (file_hdr.c_name [cdf_char] == '+') ) + { + file_hdr.c_name [cdf_char] = '\0'; + cdf_flag = 1; + } +#endif + res = mkdir (file_hdr.c_name, file_hdr.c_mode); + } + else + res = 0; + if (res < 0 && create_dir_flag) + { + create_all_directories (file_hdr.c_name); + res = mkdir (file_hdr.c_name, file_hdr.c_mode); + } + if (res < 0) + { + /* In some odd cases where the file_hdr.c_name includes `.', + the directory may have actually been created by + create_all_directories(), so the mkdir will fail + because the directory exists. If that's the case, + don't complain about it. */ + if ( (errno != EEXIST) || + (lstat (file_hdr.c_name, &file_stat) != 0) || + !(S_ISDIR (file_stat.st_mode) ) ) + { + error (0, errno, "%s", file_hdr.c_name); + continue; + } + } + if (!no_chown_flag) + if ((chown (file_hdr.c_name, + set_owner_flag ? set_owner : file_hdr.c_uid, + set_group_flag ? set_group : file_hdr.c_gid) < 0) + && errno != EPERM) + error (0, errno, "%s", file_hdr.c_name); + /* chown may have turned off some permissions we wanted. */ + if (chmod (file_hdr.c_name, (int) file_hdr.c_mode) < 0) + error (0, errno, "%s", file_hdr.c_name); +#ifdef HPUX_CDF + if (cdf_flag) + /* Once we "hide" the directory with the chmod(), + we have to refer to it using name+ instead of name. */ + file_hdr.c_name [cdf_char] = '+'; +#endif + if (retain_time_flag) + { + times.actime = times.modtime = file_hdr.c_mtime; + if (utime (file_hdr.c_name, ×) < 0) + error (0, errno, "%s", file_hdr.c_name); + } + break; + +#ifndef __MSDOS__ + case CP_IFCHR: + case CP_IFBLK: +#ifdef CP_IFSOCK + case CP_IFSOCK: +#endif +#ifdef CP_IFIFO + case CP_IFIFO: +#endif + if (file_hdr.c_nlink > 1 && archive_format != arf_tar + && archive_format != arf_ustar) + { + int link_res; + link_res = link_to_maj_min_ino (file_hdr.c_name, + file_hdr.c_dev_maj, file_hdr.c_dev_maj, + file_hdr.c_ino); + if (link_res == 0) + break; + } + else if (archive_format == arf_ustar && + file_hdr.c_tar_linkname && + file_hdr.c_tar_linkname [0] != '\0') + { + int link_res; + link_res = link_to_name (file_hdr.c_name, + file_hdr.c_tar_linkname); + if (link_res < 0) + { + error (0, errno, "cannot link %s to %s", + file_hdr.c_tar_linkname, file_hdr.c_name); + /* Something must be wrong, because we couldn't + find the file to link to. But can we assume + that the device maj/min numbers are correct + and fall through to the mknod? It's probably + safer to just break, rather than possibly + creating a bogus device file. */ + } + break; + } + + res = mknod (file_hdr.c_name, file_hdr.c_mode, + makedev (file_hdr.c_rdev_maj, file_hdr.c_rdev_min)); + if (res < 0 && create_dir_flag) + { + create_all_directories (file_hdr.c_name); + res = mknod (file_hdr.c_name, file_hdr.c_mode, + makedev (file_hdr.c_rdev_maj, file_hdr.c_rdev_min)); + } + if (res < 0) + { + error (0, errno, "%s", file_hdr.c_name); + continue; + } + if (!no_chown_flag) + if ((chown (file_hdr.c_name, + set_owner_flag ? set_owner : file_hdr.c_uid, + set_group_flag ? set_group : file_hdr.c_gid) < 0) + && errno != EPERM) + error (0, errno, "%s", file_hdr.c_name); + /* chown may have turned off some permissions we wanted. */ + if (chmod (file_hdr.c_name, file_hdr.c_mode) < 0) + error (0, errno, "%s", file_hdr.c_name); + if (retain_time_flag) + { + times.actime = times.modtime = file_hdr.c_mtime; + if (utime (file_hdr.c_name, ×) < 0) + error (0, errno, "%s", file_hdr.c_name); + } + break; +#endif + +#ifdef CP_IFLNK + case CP_IFLNK: + { + if (archive_format != arf_tar && archive_format != arf_ustar) + { + link_name = (char *) xmalloc ((unsigned int) file_hdr.c_filesize + 1); + link_name[file_hdr.c_filesize] = '\0'; + tape_buffered_read (link_name, in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + } + else + { + link_name = xstrdup (file_hdr.c_tar_linkname); + } + + res = UMASKED_SYMLINK (link_name, file_hdr.c_name, + file_hdr.c_mode); + if (res < 0 && create_dir_flag) + { + create_all_directories (file_hdr.c_name); + res = UMASKED_SYMLINK (link_name, file_hdr.c_name, + file_hdr.c_mode); + } + if (res < 0) + { + error (0, errno, "%s", file_hdr.c_name); + free (link_name); + link_name = NULL; + continue; + } + if (!no_chown_flag) + if ((lchown (file_hdr.c_name, + set_owner_flag ? set_owner : file_hdr.c_uid, + set_group_flag ? set_group : file_hdr.c_gid) < 0) + && errno != EPERM) + error (0, errno, "%s", file_hdr.c_name); + free (link_name); + link_name = NULL; + } + break; +#endif + + default: + error (0, 0, "%s: unknown file type", file_hdr.c_name); + tape_toss_input (in_file_des, file_hdr.c_filesize); + tape_skip_padding (in_file_des, file_hdr.c_filesize); + } + + if (verbose_flag) + fprintf (stderr, "%s\n", file_hdr.c_name); + if (dot_flag) + fputc ('.', stderr); + } + } + + if (dot_flag) + fputc ('\n', stderr); + + if (append_flag) + return; + + if (archive_format == arf_newascii || archive_format == arf_crcascii) + create_final_defers (); + if (!quiet_flag) + { + res = (input_bytes + io_block_size - 1) / io_block_size; + if (res == 1) + fprintf (stderr, "1 block\n"); + else + fprintf (stderr, "%d blocks\n", res); + } +} + +/* Print the file described by FILE_HDR in long format. + If LINK_NAME is nonzero, it is the name of the file that + this file is a symbolic link to. */ + +void +long_format (file_hdr, link_name) + struct new_cpio_header *file_hdr; + char *link_name; +{ + char mbuf[11]; + char tbuf[40]; + time_t when; + + mode_string (file_hdr->c_mode, mbuf); + mbuf[10] = '\0'; + + /* Get time values ready to print. */ + when = file_hdr->c_mtime; + strcpy (tbuf, ctime (&when)); + if (current_time - when > 6L * 30L * 24L * 60L * 60L + || current_time - when < 0L) + { + /* The file is older than 6 months, or in the future. + Show the year instead of the time of day. */ + strcpy (tbuf + 11, tbuf + 19); + } + tbuf[16] = '\0'; + + printf ("%s %3u ", mbuf, file_hdr->c_nlink); + +#ifndef __MSDOS__ + if (numeric_uid) +#endif + printf ("%-8u %-8u ", (unsigned int) file_hdr->c_uid, + (unsigned int) file_hdr->c_gid); +#ifndef __MSDOS__ + else + printf ("%-8.8s %-8.8s ", getuser (file_hdr->c_uid), + getgroup (file_hdr->c_gid)); + + if ((file_hdr->c_mode & CP_IFMT) == CP_IFCHR + || (file_hdr->c_mode & CP_IFMT) == CP_IFBLK) + printf ("%3u, %3u ", file_hdr->c_rdev_maj, + file_hdr->c_rdev_min); + else +#endif + printf ("%8lu ", file_hdr->c_filesize); + + printf ("%s ", tbuf + 4); + + print_name_with_quoting (file_hdr->c_name); + if (link_name) + { + printf (" -> "); + print_name_with_quoting (link_name); + } + putc ('\n', stdout); +} + +void +print_name_with_quoting (p) + register char *p; +{ + register unsigned char c; + + while ( (c = *p++) ) + { + switch (c) + { +#ifndef __MSDOS__ + case '\\': + printf ("\\\\"); + break; +#endif + + case '\n': + printf ("\\n"); + break; + + case '\b': + printf ("\\b"); + break; + + case '\r': + printf ("\\r"); + break; + + case '\t': + printf ("\\t"); + break; + + case '\f': + printf ("\\f"); + break; + + case ' ': + printf ("\\ "); + break; + + case '"': + printf ("\\\""); + break; + + default: + if (c > 040 && +#ifdef __MSDOS__ + c < 0377 && c != 0177 +#else + c < 0177 +#endif + ) + putchar (c); + else + printf ("\\%03o", (unsigned int) c); + } + } +} + +/* Read a pattern file (for the -E option). Put a list of + `num_patterns' elements in `save_patterns'. Any patterns that were + already in `save_patterns' (from the command line) are preserved. */ + +static void +read_pattern_file () +{ + int max_new_patterns; + char **new_save_patterns; + int new_num_patterns; + int i; + dynamic_string pattern_name; + FILE *pattern_fp; + + if (num_patterns < 0) + num_patterns = 0; + max_new_patterns = 1 + num_patterns; + new_save_patterns = (char **) xmalloc (max_new_patterns * sizeof (char *)); + new_num_patterns = num_patterns; + ds_init (&pattern_name, 128); + + pattern_fp = fopen (pattern_file_name, "r"); + if (pattern_fp == NULL) + error (1, errno, "%s", pattern_file_name); + while (ds_fgetstr (pattern_fp, &pattern_name, '\n') != NULL) + { + if (new_num_patterns >= max_new_patterns) + { + max_new_patterns += 1; + new_save_patterns = (char **) + xrealloc ((char *) new_save_patterns, + max_new_patterns * sizeof (char *)); + } + new_save_patterns[new_num_patterns] = xstrdup (pattern_name.ds_string); + ++new_num_patterns; + } + if (ferror (pattern_fp) || fclose (pattern_fp) == EOF) + error (1, errno, "%s", pattern_file_name); + + for (i = 0; i < num_patterns; ++i) + new_save_patterns[i] = save_patterns[i]; + + save_patterns = new_save_patterns; + num_patterns = new_num_patterns; +} + +/* Skip the padding on IN_FILE_DES after a header or file, + up to the next header. + The number of bytes skipped is based on OFFSET -- the current offset + from the last start of a header (or file) -- and the current + header type. */ + +static void +tape_skip_padding (in_file_des, offset) + int in_file_des; + int offset; +{ + int pad; + + if (archive_format == arf_crcascii || archive_format == arf_newascii) + pad = (4 - (offset % 4)) % 4; + else if (archive_format == arf_binary || archive_format == arf_hpbinary) + pad = (2 - (offset % 2)) % 2; + else if (archive_format == arf_tar || archive_format == arf_ustar) + pad = (512 - (offset % 512)) % 512; + else + pad = 0; + + if (pad != 0) + tape_toss_input (in_file_des, pad); +} + + +/* The newc and crc formats store multiply linked copies of the same file + in the archive only once. The actual data is attached to the last link + in the archive, and the other links all have a filesize of 0. When a + file in the archive has multiple links and a filesize of 0, its data is + probably "attatched" to another file in the archive, so we can't create + it right away. We have to "defer" creating it until we have created + the file that has the data "attatched" to it. We keep a list of the + "defered" links on deferments. */ + +struct deferment *deferments = NULL; + +/* Add a file header to the deferments list. For now they all just + go on one list, although we could optimize this if necessary. */ + +static void +defer_copyin (file_hdr) + struct new_cpio_header *file_hdr; +{ + struct deferment *d; + d = create_deferment (file_hdr); + d->next = deferments; + deferments = d; + return; +} + +/* We just created a file that (probably) has some other links to it + which have been defered. Go through all of the links on the deferments + list and create any which are links to this file. */ + +static void +create_defered_links (file_hdr) + struct new_cpio_header *file_hdr; +{ + struct deferment *d; + struct deferment *d_prev; + int ino; + int maj; + int min; + int link_res; + ino = file_hdr->c_ino; + maj = file_hdr->c_dev_maj; + min = file_hdr->c_dev_min; + d = deferments; + d_prev = NULL; + while (d != NULL) + { + if ( (d->header.c_ino == ino) && (d->header.c_dev_maj == maj) + && (d->header.c_dev_min == min) ) + { + struct deferment *d_free; + link_res = link_to_name (d->header.c_name, file_hdr->c_name); + if (link_res < 0) + { + error (0, errno, "cannot link %s to %s", + d->header.c_name, file_hdr->c_name); + } + if (d_prev != NULL) + d_prev->next = d->next; + else + deferments = d->next; + d_free = d; + d = d->next; + free_deferment (d_free); + } + else + { + d_prev = d; + d = d->next; + } + } +} + +/* If we had a multiply linked file that really was empty then we would + have defered all of its links, since we never found any with data + "attached", and they will still be on the deferment list even when + we are done reading the whole archive. Write out all of these + empty links that are still on the deferments list. */ + +static void +create_final_defers () +{ + struct deferment *d; + int link_res; + int out_file_des; + struct utimbuf times; /* For setting file times. */ + /* Initialize this in case it has members we don't know to set. */ + bzero (×, sizeof (struct utimbuf)); + + for (d = deferments; d != NULL; d = d->next) + { + d = deferments; + link_res = link_to_maj_min_ino (d->header.c_name, + d->header.c_dev_maj, d->header.c_dev_maj, + d->header.c_ino); + if (link_res == 0) + { + continue; + } + out_file_des = open (d->header.c_name, + O_CREAT | O_WRONLY | O_BINARY, 0600); + if (out_file_des < 0 && create_dir_flag) + { + create_all_directories (d->header.c_name); + out_file_des = open (d->header.c_name, + O_CREAT | O_WRONLY | O_BINARY, + 0600); + } + if (out_file_des < 0) + { + error (0, errno, "%s", d->header.c_name); + continue; + } + + if (close (out_file_des) < 0) + error (0, errno, "%s", d->header.c_name); + + /* File is now copied; set attributes. */ + if (!no_chown_flag) + if ((chown (d->header.c_name, + set_owner_flag ? set_owner : d->header.c_uid, + set_group_flag ? set_group : d->header.c_gid) < 0) + && errno != EPERM) + error (0, errno, "%s", d->header.c_name); + /* chown may have turned off some permissions we wanted. */ + if (chmod (d->header.c_name, (int) d->header.c_mode) < 0) + error (0, errno, "%s", d->header.c_name); + if (retain_time_flag) + { + times.actime = times.modtime = d->header.c_mtime; + if (utime (d->header.c_name, ×) < 0) + error (0, errno, "%s", d->header.c_name); + } + } +} |
