diff options
author | Jörg Frings-Fürst <debian@jff.email> | 2023-03-15 15:10:24 +0100 |
---|---|---|
committer | Jörg Frings-Fürst <debian@jff.email> | 2023-03-15 15:10:24 +0100 |
commit | 67edb6d3e91421bc50fd51baa1f4ce214efb98c7 (patch) | |
tree | 4de44db30324d1793a5b7ed6fdf32113fe7135ce /dmidecode.c | |
parent | 4461f1524993be7dfae48ed620c13d52bb6ae4ad (diff) |
New upstream version 3.5upstream/3.5upstream
Diffstat (limited to 'dmidecode.c')
-rw-r--r-- | dmidecode.c | 245 |
1 files changed, 160 insertions, 85 deletions
diff --git a/dmidecode.c b/dmidecode.c index 9aeff91..54f59c1 100644 --- a/dmidecode.c +++ b/dmidecode.c @@ -60,6 +60,7 @@ * https://www.dmtf.org/sites/default/files/DSP0270_1.0.1.pdf */ +#include <fcntl.h> #include <stdio.h> #include <string.h> #include <strings.h> @@ -1105,24 +1106,6 @@ static enum cpuid_type dmi_get_cpuid_type(const struct dmi_header *h) || (type >= 0xB6 && type <= 0xB7) /* AMD */ || (type >= 0xE4 && type <= 0xEF)) /* AMD */ return cpuid_x86_amd; - else if (type == 0x01 || type == 0x02) - { - const char *version = dmi_string(h, data[0x10]); - /* - * Some X86-class CPU have family "Other" or "Unknown". In this case, - * we use the version string to determine if they are known to - * support the CPUID instruction. - */ - if (strncmp(version, "Pentium III MMX", 15) == 0 - || strncmp(version, "Intel(R) Core(TM)2", 18) == 0 - || strncmp(version, "Intel(R) Pentium(R)", 19) == 0 - || strcmp(version, "Genuine Intel(R) CPU U1400") == 0) - return cpuid_x86_intel; - else if (strncmp(version, "AMD Athlon(TM)", 14) == 0 - || strncmp(version, "AMD Opteron(tm)", 15) == 0 - || strncmp(version, "Dual-Core AMD Opteron(tm)", 25) == 0) - return cpuid_x86_amd; - } /* neither X86 nor ARM */ return cpuid_none; @@ -2722,7 +2705,7 @@ static void dmi_memory_device_width(const char *attr, u16 code) /* * If no memory module is present, width may be 0 */ - if (code == 0xFFFF || code == 0) + if (code == 0xFFFF || (code == 0 && !(opt.flags & FLAG_NO_QUIRKS))) pr_attr(attr, "Unknown"); else pr_attr(attr, "%u bits", code); @@ -4720,7 +4703,7 @@ static void dmi_decode(const struct dmi_header *h, u16 ver) dmi_memory_device_type_detail(WORD(data + 0x13)); if (h->length < 0x17) break; /* If no module is present, the remaining fields are irrelevant */ - if (WORD(data + 0x0C) == 0) + if (WORD(data + 0x0C) == 0 && !(opt.flags & FLAG_NO_QUIRKS)) break; dmi_memory_device_speed("Speed", WORD(data + 0x15), h->length >= 0x5C ? @@ -5403,12 +5386,12 @@ static void dmi_table_string(const struct dmi_header *h, const u8 *data, u16 ver switch (key) { case 0x015: /* -s bios-revision */ - if (data[key - 1] != 0xFF && data[key] != 0xFF) - printf("%u.%u\n", data[key - 1], data[key]); + if (data[offset - 1] != 0xFF && data[offset] != 0xFF) + printf("%u.%u\n", data[offset - 1], data[offset]); break; case 0x017: /* -s firmware-revision */ - if (data[key - 1] != 0xFF && data[key] != 0xFF) - printf("%u.%u\n", data[key - 1], data[key]); + if (data[offset - 1] != 0xFF && data[offset] != 0xFF) + printf("%u.%u\n", data[offset - 1], data[offset]); break; case 0x108: dmi_system_uuid(NULL, NULL, data + offset, ver); @@ -5427,11 +5410,65 @@ static void dmi_table_string(const struct dmi_header *h, const u8 *data, u16 ver } } -static void dmi_table_dump(const u8 *buf, u32 len) +static int dmi_table_dump(const u8 *ep, u32 ep_len, const u8 *table, + u32 table_len) { + int fd; + FILE *f; + + fd = open(opt.dumpfile, O_WRONLY|O_CREAT|O_EXCL, 0666); + if (fd == -1) + { + fprintf(stderr, "%s: ", opt.dumpfile); + perror("open"); + return -1; + } + + f = fdopen(fd, "wb"); + if (!f) + { + fprintf(stderr, "%s: ", opt.dumpfile); + perror("fdopen"); + return -1; + } + + if (!(opt.flags & FLAG_QUIET)) + pr_comment("Writing %d bytes to %s.", ep_len, opt.dumpfile); + if (fwrite(ep, ep_len, 1, f) != 1) + { + fprintf(stderr, "%s: ", opt.dumpfile); + perror("fwrite"); + goto err_close; + } + + if (fseek(f, 32, SEEK_SET) != 0) + { + fprintf(stderr, "%s: ", opt.dumpfile); + perror("fseek"); + goto err_close; + } + if (!(opt.flags & FLAG_QUIET)) - pr_comment("Writing %d bytes to %s.", len, opt.dumpfile); - write_dump(32, len, buf, opt.dumpfile, 0); + pr_comment("Writing %d bytes to %s.", table_len, opt.dumpfile); + if (fwrite(table, table_len, 1, f) != 1) + { + fprintf(stderr, "%s: ", opt.dumpfile); + perror("fwrite"); + goto err_close; + } + + if (fclose(f)) + { + fprintf(stderr, "%s: ", opt.dumpfile); + perror("fclose"); + return -1; + } + + return 0; + +err_close: + fclose(f); + return -1; } static void dmi_table_decode(u8 *buf, u32 len, u16 num, u16 ver, u32 flags) @@ -5544,7 +5581,7 @@ static void dmi_table_decode(u8 *buf, u32 len, u16 num, u16 ver, u32 flags) } /* Fixup a common mistake */ - if (h.type == 34) + if (h.type == 34 && !(opt.flags & FLAG_NO_QUIRKS)) dmi_fixup_type_34(&h, display); if (display) @@ -5585,8 +5622,9 @@ static void dmi_table_decode(u8 *buf, u32 len, u16 num, u16 ver, u32 flags) } } -static void dmi_table(off_t base, u32 len, u16 num, u32 ver, const char *devmem, - u32 flags) +/* Allocates a buffer for the table, must be freed by the caller */ +static u8 *dmi_table_get(off_t base, u32 *len, u16 num, u32 ver, + const char *devmem, u32 flags) { u8 *buf; @@ -5605,7 +5643,7 @@ static void dmi_table(off_t base, u32 len, u16 num, u32 ver, const char *devmem, { if (num) pr_info("%u structures occupying %u bytes.", - num, len); + num, *len); if (!(opt.flags & FLAG_FROM_DUMP)) pr_info("Table at 0x%08llX.", (unsigned long long)base); @@ -5623,19 +5661,19 @@ static void dmi_table(off_t base, u32 len, u16 num, u32 ver, const char *devmem, * would be the result of the kernel truncating the table on * parse error. */ - size_t size = len; + size_t size = *len; buf = read_file(flags & FLAG_NO_FILE_OFFSET ? 0 : base, &size, devmem); - if (!(opt.flags & FLAG_QUIET) && num && size != (size_t)len) + if (!(opt.flags & FLAG_QUIET) && num && size != (size_t)*len) { fprintf(stderr, "Wrong DMI structures length: %u bytes " "announced, only %lu bytes available.\n", - len, (unsigned long)size); + *len, (unsigned long)size); } - len = size; + *len = size; } else - buf = mem_chunk(base, len, devmem); + buf = mem_chunk(base, *len, devmem); if (buf == NULL) { @@ -5645,15 +5683,9 @@ static void dmi_table(off_t base, u32 len, u16 num, u32 ver, const char *devmem, fprintf(stderr, "Try compiling dmidecode with -DUSE_MMAP.\n"); #endif - return; } - if (opt.flags & FLAG_DUMP_BIN) - dmi_table_dump(buf, len); - else - dmi_table_decode(buf, len, num, ver >> 8, flags); - - free(buf); + return buf; } @@ -5688,8 +5720,9 @@ static void overwrite_smbios3_address(u8 *buf) static int smbios3_decode(u8 *buf, const char *devmem, u32 flags) { - u32 ver; + u32 ver, len; u64 offset; + u8 *table; /* Don't let checksum run beyond the buffer */ if (buf[0x06] > 0x20) @@ -5700,7 +5733,8 @@ static int smbios3_decode(u8 *buf, const char *devmem, u32 flags) return 0; } - if (!checksum(buf, buf[0x06])) + if (buf[0x06] < 0x18 + || !checksum(buf, buf[0x06])) return 0; ver = (buf[0x07] << 16) + (buf[0x08] << 8) + buf[0x09]; @@ -5715,8 +5749,12 @@ static int smbios3_decode(u8 *buf, const char *devmem, u32 flags) return 0; } - dmi_table(((off_t)offset.h << 32) | offset.l, - DWORD(buf + 0x0C), 0, ver, devmem, flags | FLAG_STOP_AT_EOT); + /* Maximum length, may get trimmed */ + len = DWORD(buf + 0x0C); + table = dmi_table_get(((off_t)offset.h << 32) | offset.l, &len, 0, ver, + devmem, flags | FLAG_STOP_AT_EOT); + if (table == NULL) + return 1; if (opt.flags & FLAG_DUMP_BIN) { @@ -5725,18 +5763,47 @@ static int smbios3_decode(u8 *buf, const char *devmem, u32 flags) memcpy(crafted, buf, 32); overwrite_smbios3_address(crafted); - if (!(opt.flags & FLAG_QUIET)) - pr_comment("Writing %d bytes to %s.", crafted[0x06], - opt.dumpfile); - write_dump(0, crafted[0x06], crafted, opt.dumpfile, 1); + dmi_table_dump(crafted, crafted[0x06], table, len); } + else + { + dmi_table_decode(table, len, 0, ver >> 8, + flags | FLAG_STOP_AT_EOT); + } + + free(table); return 1; } +static void dmi_fixup_version(u16 *ver) +{ + /* Some BIOS report weird SMBIOS version, fix that up */ + switch (*ver) + { + case 0x021F: + case 0x0221: + if (!(opt.flags & FLAG_QUIET)) + fprintf(stderr, + "SMBIOS version fixup (2.%d -> 2.%d).\n", + *ver & 0xFF, 3); + *ver = 0x0203; + break; + case 0x0233: + if (!(opt.flags & FLAG_QUIET)) + fprintf(stderr, + "SMBIOS version fixup (2.%d -> 2.%d).\n", + 51, 6); + *ver = 0x0206; + break; + } +} + static int smbios_decode(u8 *buf, const char *devmem, u32 flags) { - u16 ver; + u16 ver, num; + u32 len; + u8 *table; /* Don't let checksum run beyond the buffer */ if (buf[0x05] > 0x20) @@ -5747,37 +5814,30 @@ static int smbios_decode(u8 *buf, const char *devmem, u32 flags) return 0; } - if (!checksum(buf, buf[0x05]) + /* + * The size of this structure is 0x1F bytes, but we also accept value + * 0x1E due to a mistake in SMBIOS specification version 2.1. + */ + if (buf[0x05] < 0x1E + || !checksum(buf, buf[0x05]) || memcmp(buf + 0x10, "_DMI_", 5) != 0 || !checksum(buf + 0x10, 0x0F)) return 0; ver = (buf[0x06] << 8) + buf[0x07]; - /* Some BIOS report weird SMBIOS version, fix that up */ - switch (ver) - { - case 0x021F: - case 0x0221: - if (!(opt.flags & FLAG_QUIET)) - fprintf(stderr, - "SMBIOS version fixup (2.%d -> 2.%d).\n", - ver & 0xFF, 3); - ver = 0x0203; - break; - case 0x0233: - if (!(opt.flags & FLAG_QUIET)) - fprintf(stderr, - "SMBIOS version fixup (2.%d -> 2.%d).\n", - 51, 6); - ver = 0x0206; - break; - } + if (!(opt.flags & FLAG_NO_QUIRKS)) + dmi_fixup_version(&ver); if (!(opt.flags & FLAG_QUIET)) pr_info("SMBIOS %u.%u present.", ver >> 8, ver & 0xFF); - dmi_table(DWORD(buf + 0x18), WORD(buf + 0x16), WORD(buf + 0x1C), - ver << 8, devmem, flags); + /* Maximum length, may get trimmed */ + len = WORD(buf + 0x16); + num = WORD(buf + 0x1C); + table = dmi_table_get(DWORD(buf + 0x18), &len, num, ver << 8, + devmem, flags); + if (table == NULL) + return 1; if (opt.flags & FLAG_DUMP_BIN) { @@ -5786,27 +5846,39 @@ static int smbios_decode(u8 *buf, const char *devmem, u32 flags) memcpy(crafted, buf, 32); overwrite_dmi_address(crafted + 0x10); - if (!(opt.flags & FLAG_QUIET)) - pr_comment("Writing %d bytes to %s.", crafted[0x05], - opt.dumpfile); - write_dump(0, crafted[0x05], crafted, opt.dumpfile, 1); + dmi_table_dump(crafted, crafted[0x05], table, len); + } + else + { + dmi_table_decode(table, len, num, ver, flags); } + free(table); + return 1; } static int legacy_decode(u8 *buf, const char *devmem, u32 flags) { + u16 ver, num; + u32 len; + u8 *table; + if (!checksum(buf, 0x0F)) return 0; + ver = ((buf[0x0E] & 0xF0) << 4) + (buf[0x0E] & 0x0F); if (!(opt.flags & FLAG_QUIET)) pr_info("Legacy DMI %u.%u present.", buf[0x0E] >> 4, buf[0x0E] & 0x0F); - dmi_table(DWORD(buf + 0x08), WORD(buf + 0x06), WORD(buf + 0x0C), - ((buf[0x0E] & 0xF0) << 12) + ((buf[0x0E] & 0x0F) << 8), - devmem, flags); + /* Maximum length, may get trimmed */ + len = WORD(buf + 0x06); + num = WORD(buf + 0x0C); + table = dmi_table_get(DWORD(buf + 0x08), &len, num, ver << 8, + devmem, flags); + if (table == NULL) + return 1; if (opt.flags & FLAG_DUMP_BIN) { @@ -5815,11 +5887,14 @@ static int legacy_decode(u8 *buf, const char *devmem, u32 flags) memcpy(crafted, buf, 16); overwrite_dmi_address(crafted); - if (!(opt.flags & FLAG_QUIET)) - pr_comment("Writing %d bytes to %s.", 0x0F, - opt.dumpfile); - write_dump(0, 0x0F, crafted, opt.dumpfile, 1); + dmi_table_dump(crafted, 0x0F, table, len); } + else + { + dmi_table_decode(table, len, num, ver, flags); + } + + free(table); return 1; } |