| File: | build-scan/../src/udev/mtd_probe/probe_smartmedia.c |
| Warning: | line 53, column 17 Potential leak of memory pointed to by 'cis_buffer' |
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| 1 | /* SPDX-License-Identifier: GPL-2.0+ */ | |||
| 2 | /* | |||
| 3 | * Copyright © 2010 - Maxim Levitsky | |||
| 4 | * | |||
| 5 | * mtd_probe is free software; you can redistribute it and/or modify | |||
| 6 | * it under the terms of the GNU General Public License as published by | |||
| 7 | * the Free Software Foundation; either version 2 of the License, or | |||
| 8 | * (at your option) any later version. | |||
| 9 | * | |||
| 10 | * mtd_probe is distributed in the hope that it will be useful, | |||
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |||
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |||
| 13 | * GNU General Public License for more details. | |||
| 14 | * | |||
| 15 | * You should have received a copy of the GNU General Public License | |||
| 16 | * along with mtd_probe; if not, write to the Free Software | |||
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, | |||
| 18 | * Boston, MA 02110-1301 USA | |||
| 19 | */ | |||
| 20 | ||||
| 21 | #include <errno(*__errno_location ()).h> | |||
| 22 | #include <fcntl.h> | |||
| 23 | #include <mtd/mtd-user.h> | |||
| 24 | #include <stdint.h> | |||
| 25 | #include <stdio.h> | |||
| 26 | #include <stdlib.h> | |||
| 27 | #include <string.h> | |||
| 28 | #include <sys/stat.h> | |||
| 29 | #include <sys/types.h> | |||
| 30 | #include <unistd.h> | |||
| 31 | ||||
| 32 | #include "alloc-util.h" | |||
| 33 | #include "mtd_probe.h" | |||
| 34 | ||||
| 35 | static const uint8_t cis_signature[] = { | |||
| 36 | 0x01, 0x03, 0xD9, 0x01, 0xFF, 0x18, 0x02, 0xDF, 0x01, 0x20 | |||
| 37 | }; | |||
| 38 | ||||
| 39 | int probe_smart_media(int mtd_fd, mtd_info_t* info) { | |||
| 40 | int sector_size; | |||
| 41 | int block_size; | |||
| 42 | int size_in_megs; | |||
| 43 | int spare_count; | |||
| 44 | _cleanup_free___attribute__((cleanup(freep))) uint8_t *cis_buffer = NULL((void*)0); | |||
| 45 | int offset; | |||
| 46 | int cis_found = 0; | |||
| 47 | ||||
| 48 | cis_buffer = malloc(SM_SECTOR_SIZE512); | |||
| ||||
| 49 | if (!cis_buffer) | |||
| 50 | return log_oom()log_oom_internal(LOG_REALM_UDEV, "../src/udev/mtd_probe/probe_smartmedia.c" , 50, __func__); | |||
| 51 | ||||
| 52 | if (info->type != MTD_NANDFLASH4) { | |||
| 53 | log_debug("Not marked MTD_NANDFLASH.")({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_UDEV ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/udev/mtd_probe/probe_smartmedia.c", 53, __func__, "Not marked MTD_NANDFLASH." ) : -abs(_e); }); | |||
| ||||
| 54 | return -EINVAL22; | |||
| 55 | } | |||
| 56 | ||||
| 57 | sector_size = info->writesize; | |||
| 58 | block_size = info->erasesize; | |||
| 59 | size_in_megs = info->size / (1024 * 1024); | |||
| 60 | ||||
| 61 | if (!IN_SET(sector_size, SM_SECTOR_SIZE, SM_SMALL_PAGE)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended [20 - sizeof((int[]){512, 256})/sizeof(int)]; switch(sector_size ) { case 512: case 256: _found = 1; break; default: break; } _found ; })) { | |||
| 62 | log_debug("Unexpected sector size: %i", sector_size)({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_UDEV ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/udev/mtd_probe/probe_smartmedia.c", 62, __func__, "Unexpected sector size: %i" , sector_size) : -abs(_e); }); | |||
| 63 | return -EINVAL22; | |||
| 64 | } | |||
| 65 | ||||
| 66 | switch(size_in_megs) { | |||
| 67 | case 1: | |||
| 68 | case 2: | |||
| 69 | spare_count = 6; | |||
| 70 | break; | |||
| 71 | case 4: | |||
| 72 | spare_count = 12; | |||
| 73 | break; | |||
| 74 | default: | |||
| 75 | spare_count = 24; | |||
| 76 | break; | |||
| 77 | } | |||
| 78 | ||||
| 79 | for (offset = 0; offset < block_size * spare_count; offset += sector_size) { | |||
| 80 | (void) lseek(mtd_fd, SEEK_SET0, offset); | |||
| 81 | ||||
| 82 | if (read(mtd_fd, cis_buffer, SM_SECTOR_SIZE512) == SM_SECTOR_SIZE512) { | |||
| 83 | cis_found = 1; | |||
| 84 | break; | |||
| 85 | } | |||
| 86 | } | |||
| 87 | ||||
| 88 | if (!cis_found) { | |||
| 89 | log_debug("CIS not found")({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_UDEV ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/udev/mtd_probe/probe_smartmedia.c", 89, __func__, "CIS not found" ) : -abs(_e); }); | |||
| 90 | return -EINVAL22; | |||
| 91 | } | |||
| 92 | ||||
| 93 | if (memcmp(cis_buffer, cis_signature, sizeof(cis_signature)) != 0 && | |||
| 94 | memcmp(cis_buffer + SM_SMALL_PAGE256, cis_signature, sizeof(cis_signature)) != 0) { | |||
| 95 | log_debug("CIS signature didn't match")({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_UDEV ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/udev/mtd_probe/probe_smartmedia.c", 95, __func__, "CIS signature didn't match" ) : -abs(_e); }); | |||
| 96 | return -EINVAL22; | |||
| 97 | } | |||
| 98 | ||||
| 99 | printf("MTD_FTL=smartmedia\n"); | |||
| 100 | return 0; | |||
| 101 | } |