/* * NOTE: if a filename suffix is ".z", it is the file gziped by afio. * it would be nice that we can show uncompressed file size and we can * uncompressed file contents automatically, unfortunately we have nothing * to get a uncompressed file size while reading each header. It means * we also cannot uncompress file contents under our framework. */ static int header_afiol(struct archive_read *a, struct cpio *cpio, struct archive_entry *entry, size_t *namelength, size_t *name_pad) { const void *h; const char *header; a->archive.archive_format = ARCHIVE_FORMAT_CPIO_AFIO_LARGE; a->archive.archive_format_name = "afio large ASCII"; /* Read fixed-size portion of header. */ h = __archive_read_ahead(a, afiol_header_size, NULL); if (h == NULL) return (ARCHIVE_FATAL); /* Parse out octal fields. */ header = (const char *)h; archive_entry_set_dev(entry, (dev_t)atol16(header + afiol_dev_offset, afiol_dev_size)); archive_entry_set_ino(entry, atol16(header + afiol_ino_offset, afiol_ino_size)); archive_entry_set_mode(entry, (mode_t)atol8(header + afiol_mode_offset, afiol_mode_size)); archive_entry_set_uid(entry, atol16(header + afiol_uid_offset, afiol_uid_size)); archive_entry_set_gid(entry, atol16(header + afiol_gid_offset, afiol_gid_size)); archive_entry_set_nlink(entry, (unsigned int)atol16(header + afiol_nlink_offset, afiol_nlink_size)); archive_entry_set_rdev(entry, (dev_t)atol16(header + afiol_rdev_offset, afiol_rdev_size)); archive_entry_set_mtime(entry, atol16(header + afiol_mtime_offset, afiol_mtime_size), 0); *namelength = (size_t)atol16(header + afiol_namesize_offset, afiol_namesize_size); *name_pad = 0; /* No padding of filename. */ cpio->entry_bytes_remaining = atol16(header + afiol_filesize_offset, afiol_filesize_size); archive_entry_set_size(entry, cpio->entry_bytes_remaining); cpio->entry_padding = 0; __archive_read_consume(a, afiol_header_size); return (ARCHIVE_OK); }
static int header_newc(struct archive_read *a, struct cpio *cpio, struct archive_entry *entry, size_t *namelength, size_t *name_pad) { const void *h; const struct cpio_newc_header *header; int r; r = find_newc_header(a); if (r < ARCHIVE_WARN) return (r); /* Read fixed-size portion of header. */ h = __archive_read_ahead(a, sizeof(struct cpio_newc_header), NULL); if (h == NULL) return (ARCHIVE_FATAL); __archive_read_consume(a, sizeof(struct cpio_newc_header)); /* Parse out hex fields. */ header = (const struct cpio_newc_header *)h; if (memcmp(header->c_magic, "070701", 6) == 0) { a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_NOCRC; a->archive.archive_format_name = "ASCII cpio (SVR4 with no CRC)"; } else if (memcmp(header->c_magic, "070702", 6) == 0) { a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_CRC; a->archive.archive_format_name = "ASCII cpio (SVR4 with CRC)"; } else { /* TODO: Abort here? */ } archive_entry_set_devmajor(entry, atol16(header->c_devmajor, sizeof(header->c_devmajor))); archive_entry_set_devminor(entry, atol16(header->c_devminor, sizeof(header->c_devminor))); archive_entry_set_ino(entry, atol16(header->c_ino, sizeof(header->c_ino))); archive_entry_set_mode(entry, atol16(header->c_mode, sizeof(header->c_mode))); archive_entry_set_uid(entry, atol16(header->c_uid, sizeof(header->c_uid))); archive_entry_set_gid(entry, atol16(header->c_gid, sizeof(header->c_gid))); archive_entry_set_nlink(entry, atol16(header->c_nlink, sizeof(header->c_nlink))); archive_entry_set_rdevmajor(entry, atol16(header->c_rdevmajor, sizeof(header->c_rdevmajor))); archive_entry_set_rdevminor(entry, atol16(header->c_rdevminor, sizeof(header->c_rdevminor))); archive_entry_set_mtime(entry, atol16(header->c_mtime, sizeof(header->c_mtime)), 0); *namelength = atol16(header->c_namesize, sizeof(header->c_namesize)); /* Pad name to 2 more than a multiple of 4. */ *name_pad = (2 - *namelength) & 3; /* * Note: entry_bytes_remaining is at least 64 bits and * therefore guaranteed to be big enough for a 33-bit file * size. */ cpio->entry_bytes_remaining = atol16(header->c_filesize, sizeof(header->c_filesize)); archive_entry_set_size(entry, cpio->entry_bytes_remaining); /* Pad file contents to a multiple of 4. */ cpio->entry_padding = 3 & -cpio->entry_bytes_remaining; return (r); }
static int header_newc(struct archive_read *a, struct cpio *cpio, struct archive_entry *entry, size_t *namelength, size_t *name_pad) { const void *h; const char *header; int r; r = find_newc_header(a); if (r < ARCHIVE_WARN) return (r); /* Read fixed-size portion of header. */ h = __archive_read_ahead(a, newc_header_size, NULL); if (h == NULL) return (ARCHIVE_FATAL); /* Parse out hex fields. */ header = (const char *)h; if (memcmp(header + newc_magic_offset, "070701", 6) == 0) { a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_NOCRC; a->archive.archive_format_name = "ASCII cpio (SVR4 with no CRC)"; } else if (memcmp(header + newc_magic_offset, "070702", 6) == 0) { a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_CRC; a->archive.archive_format_name = "ASCII cpio (SVR4 with CRC)"; } else { /* TODO: Abort here? */ } archive_entry_set_devmajor(entry, (dev_t)atol16(header + newc_devmajor_offset, newc_devmajor_size)); archive_entry_set_devminor(entry, (dev_t)atol16(header + newc_devminor_offset, newc_devminor_size)); archive_entry_set_ino(entry, atol16(header + newc_ino_offset, newc_ino_size)); archive_entry_set_mode(entry, (mode_t)atol16(header + newc_mode_offset, newc_mode_size)); archive_entry_set_uid(entry, atol16(header + newc_uid_offset, newc_uid_size)); archive_entry_set_gid(entry, atol16(header + newc_gid_offset, newc_gid_size)); archive_entry_set_nlink(entry, (unsigned int)atol16(header + newc_nlink_offset, newc_nlink_size)); archive_entry_set_rdevmajor(entry, (dev_t)atol16(header + newc_rdevmajor_offset, newc_rdevmajor_size)); archive_entry_set_rdevminor(entry, (dev_t)atol16(header + newc_rdevminor_offset, newc_rdevminor_size)); archive_entry_set_mtime(entry, atol16(header + newc_mtime_offset, newc_mtime_size), 0); *namelength = (size_t)atol16(header + newc_namesize_offset, newc_namesize_size); /* Pad name to 2 more than a multiple of 4. */ *name_pad = (2 - *namelength) & 3; /* Make sure that the padded name length fits into size_t. */ if (*name_pad > SIZE_MAX - *namelength) { archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, "cpio archive has invalid namelength"); return (ARCHIVE_FATAL); } /* * Note: entry_bytes_remaining is at least 64 bits and * therefore guaranteed to be big enough for a 33-bit file * size. */ cpio->entry_bytes_remaining = atol16(header + newc_filesize_offset, newc_filesize_size); archive_entry_set_size(entry, cpio->entry_bytes_remaining); /* Pad file contents to a multiple of 4. */ cpio->entry_padding = 3 & -cpio->entry_bytes_remaining; __archive_read_consume(a, newc_header_size); return (r); }