72 lines
2.8 KiB
C
72 lines
2.8 KiB
C
/*
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* mkbootimg/tar.c
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*
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* Copyright (C) 2017 - 2021 bzt (bztsrc@gitlab)
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* This file is part of the BOOTBOOT Protocol package.
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* @brief POSIX ustar file system driver
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* See https://en.wikipedia.org/wiki/Tarball_(computing)#UStar_format
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*
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*/
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#include "main.h"
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void tar_open(gpt_t *gpt_entry)
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{
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if(gpt_entry && (gpt_entry->last - gpt_entry->start) < 1) {
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fprintf(stderr,"mkbootimg: partition #%d %s\r\n", fs_no, lang[ERR_NOSIZE]);
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exit(1);
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}
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}
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void tar_add(struct stat *st, char *name, unsigned char *content, int size)
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{
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unsigned char *end;
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int i, j = 0;
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if(!S_ISREG(st->st_mode) && !S_ISDIR(st->st_mode) && !S_ISLNK(st->st_mode)) return;
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fs_base = realloc(fs_base, fs_len + 512 + ((size + 511) & ~511));
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if(!fs_base) { fprintf(stderr,"mkbootimg: %s\r\n",lang[ERR_MEM]); exit(1); }
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end = fs_base + fs_len;
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memset(end, 0, 512);
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strncpy((char*)end, name, 99);
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sprintf((char*)end + 100, "%07o", st->st_mode & 077777);
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sprintf((char*)end + 108, "%07o", 0);
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sprintf((char*)end + 116, "%07o", 0);
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sprintf((char*)end + 124, "%011o", size);
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sprintf((char*)end + 136, "%011o", 0);
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sprintf((char*)end + 148, "%06o", 0);
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sprintf((char*)end + 155, " %1d", S_ISDIR(st->st_mode) ? 5 : (S_ISLNK(st->st_mode) ? 2 : 0));
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if(S_ISLNK(st->st_mode)) { strncpy((char*)end + 157, (char*)content, 99); size = 0; }
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memcpy(end + 257, "ustar ", 7);
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memcpy(end + 265, "root", 4); memcpy(end + 297, "root", 4);
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for(i = 0; i < 512; i++) j += end[i];
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for(i = 0; i < 8; i++) j += ' ' - end[148 + i];
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sprintf((char*)end + 148, "%06o", j);
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end += 512;
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if(content && size) { memcpy(end, content, size); memset(end + size, 0, ((size + 511) & ~511) - size); }
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fs_len += 512 + ((size + 511) & ~511);
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}
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void tar_close()
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{
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}
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