| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <d4bb1c90c850c5163f28b1c04d16c5d85aaaf815.1348371388.git.len.brown@intel.com>
Date: Sun, 23 Sep 2012 00:34:10 -0400
From: Len Brown <lenb@...nel.org>
To: linux-acpi@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Len Brown <len.brown@...el.com>
Subject: [PATCH 22/23] tools/power/acpi/acpidump: version 20101221 - find dynamic tables in sysfs
From: Len Brown <len.brown@...el.com>
This is unchanged version 20101221, plus a small bit in
DEFINE_ALTERNATE_TYPES to enable building with latest kernel headers.
This version finds dynamic tables exported by Linux in
/sys/firmware/acpi/tables/dynamic
Signed-off-by: Len Brown <len.brown@...el.com>
---
tools/power/acpi/acpidump.c | 187 +++++++++++++++++++++-----------------------
1 file changed, 89 insertions(+), 98 deletions(-)
diff --git a/tools/power/acpi/acpidump.c b/tools/power/acpi/acpidump.c
index a63dee9..0777987 100644
--- a/tools/power/acpi/acpidump.c
+++ b/tools/power/acpi/acpidump.c
@@ -1,6 +1,5 @@
/*
* (c) Alexey Starikovskiy, Intel, 2005-2006.
- * (c) Len Brown, Intel, 2007.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -63,6 +62,8 @@ typedef long long s64;
#include <unistd.h>
#include <getopt.h>
+#include <sys/types.h>
+#include <dirent.h>
#include <acpi/acconfig.h>
#include <acpi/platform/acenv.h>
@@ -186,40 +187,6 @@ static void acpi_show_data(int fd, u8 * data, int size)
/*
* Output ACPI table
*/
-
-#define MAX_TABLES 128
-int next_table_dump;
-u64 dumped_tables[MAX_TABLES];
-
-void
-set_table_dumped(u64 address) {
- if (next_table_dump >= MAX_TABLES) {
- printf("increase MAX_TABLES\n");
- exit(1);
- }
- dumped_tables[next_table_dump++] = address;
-}
-
-/*
- * list the tables as they are dumped
- * check the list so that they are not dumped twice.
- *
- * this is needed because we follow both the XSDT and RSDT
- * which generally point to all duplicate tables
- * except the FADT
- */
-int
-check_table_dumped(u64 address) {
- int i;
-
- for (i = 0; i < MAX_TABLES; ++i) {
- if (address == dumped_tables[i])
- return 1;
- if (dumped_tables[i] == 0)
- return 0;
- }
- return 0;
-}
static void acpi_show_table(int fd, struct acpi_table_header *table, unsigned long addr)
{
char buff[80];
@@ -233,10 +200,6 @@ static void acpi_show_table(int fd, struct acpi_table_header *table, unsigned lo
static void write_table(int fd, struct acpi_table_header *tbl, unsigned long addr)
{
static int select_done = 0;
-
- if (check_table_dumped((u64)addr))
- return;
-
if (!select_sig[0]) {
if (print) {
acpi_show_table(fd, tbl, addr);
@@ -255,7 +218,6 @@ static void write_table(int fd, struct acpi_table_header *tbl, unsigned long add
}
select_done = 1;
}
- set_table_dumped((u64) addr);
}
static void acpi_dump_FADT(int fd, struct acpi_table_header *tbl, unsigned long xaddr) {
@@ -312,26 +274,30 @@ no_facs:
write_table(fd, (struct acpi_table_header *)&x, xaddr);
}
-
-static int acpi_dump_RSDT(int fd, struct acpi_rsdp_descriptor *rsdp)
+static int acpi_dump_SDT(int fd, struct acpi_rsdp_descriptor *rsdp)
{
struct acpi_table_header *sdt, *tbl = 0;
- int i, num;
+ int xsdt = 1, i, num;
char *offset;
unsigned long addr;
-
- tbl = acpi_map_table(rsdp->rsdt_physical_address, "RSDT");
+ if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
+ tbl = acpi_map_table(rsdp->xsdt_physical_address, "XSDT");
+ }
+ if (!tbl && rsdp->rsdt_physical_address) {
+ xsdt = 0;
+ tbl = acpi_map_table(rsdp->rsdt_physical_address, "RSDT");
+ }
if (!tbl) return 0;
-
sdt = malloc(tbl->length);
memcpy(sdt, tbl, tbl->length);
acpi_unmap_table(tbl);
if (checksum((u8 *)sdt, sdt->length))
- fprintf(stderr, "Wrong checksum for %s!\n", "RSDT");
- num = (sdt->length - sizeof(struct acpi_table_header))/sizeof(u32);
+ fprintf(stderr, "Wrong checksum for %s!\n", (xsdt)?"XSDT":"RSDT");
+ num = (sdt->length - sizeof(struct acpi_table_header))/((xsdt)?sizeof(u64):sizeof(u32));
offset = (char *)sdt + sizeof(struct acpi_table_header);
- for (i = 0; i < num; ++i, offset += sizeof(u32)) {
- addr = (unsigned long)(*(u32 *)offset);
+ for (i = 0; i < num; ++i, offset += ((xsdt) ? sizeof(u64) : sizeof(u32))) {
+ addr = (xsdt) ? (unsigned long)(*(u64 *)offset):
+ (unsigned long)(*(u32 *)offset);
if (!addr) continue;
tbl = acpi_map_table(addr, 0);
if (!tbl) continue;
@@ -339,66 +305,92 @@ static int acpi_dump_RSDT(int fd, struct acpi_rsdp_descriptor *rsdp)
acpi_dump_FADT(fd, tbl, addr);
} else {
if (checksum((u8 *)tbl, tbl->length))
- fprintf(stderr, "Wrong checksum for %.4s!\n", tbl->signature);
+ fprintf(stderr, "Wrong checksum for generic table!\n");
write_table(fd, tbl, addr);
}
acpi_unmap_table(tbl);
if (connect) {
- (*(u32*)offset) = lseek(fd, 0, SEEK_CUR);
+ if (xsdt)
+ (*(u64*)offset) = lseek(fd, 0, SEEK_CUR);
+ else
+ (*(u32*)offset) = lseek(fd, 0, SEEK_CUR);
}
}
- addr = (unsigned long)rsdp->rsdt_physical_address;
- if (connect) {
- rsdp->rsdt_physical_address = lseek(fd, 0, SEEK_CUR);
+ if (xsdt) {
+ addr = (unsigned long)rsdp->xsdt_physical_address;
+ if (connect) {
+ rsdp->xsdt_physical_address = lseek(fd, 0, SEEK_CUR);
+ }
+ } else {
+ addr = (unsigned long)rsdp->rsdt_physical_address;
+ if (connect) {
+ rsdp->rsdt_physical_address = lseek(fd, 0, SEEK_CUR);
+ }
}
write_table(fd, sdt, addr);
free (sdt);
return 1;
}
+#define DYNAMIC_SSDT "/sys/firmware/acpi/tables/dynamic"
-static int acpi_dump_XSDT(int fd, struct acpi_rsdp_descriptor *rsdp)
+static void acpi_dump_dynamic_SSDT(int fd)
{
- struct acpi_table_header *sdt, *tbl = 0;
- int i, num;
- char *offset;
- unsigned long addr;
- if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
- tbl = acpi_map_table(rsdp->xsdt_physical_address, "XSDT");
+ struct stat file_stat;
+ char filename[256], *ptr;
+ DIR *tabledir;
+ struct dirent *entry;
+ FILE *fp;
+ int count, readcount, length;
+ struct acpi_table_header table_header, *ptable;
+
+ if (stat(DYNAMIC_SSDT, &file_stat) == -1) {
+ /* The directory doesn't exist */
+ return;
}
- if (!tbl) return 0;
-
- sdt = malloc(tbl->length);
- memcpy(sdt, tbl, tbl->length);
- acpi_unmap_table(tbl);
- if (checksum((u8 *)sdt, sdt->length))
- fprintf(stderr, "Wrong checksum for %s!\n", "XSDT");
- num = (sdt->length - sizeof(struct acpi_table_header))/sizeof(u64);
- offset = (char *)sdt + sizeof(struct acpi_table_header);
- for (i = 0; i < num; ++i, offset += sizeof(u64)) {
- addr = (unsigned long)(*(u64 *)offset);
- if (!addr) continue;
- tbl = acpi_map_table(addr, 0);
- if (!tbl) continue;
- if (!memcmp(tbl->signature, FADT_SIG, 4)) {
- acpi_dump_FADT(fd, tbl, addr);
- } else {
- if (checksum((u8 *)tbl, tbl->length))
- fprintf(stderr, "Wrong checksum for %.4s\n", tbl->signature);
- write_table(fd, tbl, addr);
+ tabledir = opendir(DYNAMIC_SSDT);
+ if(!tabledir){
+ /*can't open the directory */
+ return;
+ }
+
+ while ((entry = readdir(tabledir)) != 0){
+ /* skip the file of . /.. */
+ if (entry->d_name[0] == '.')
+ continue;
+
+ sprintf(filename, "%s/%s", DYNAMIC_SSDT, entry->d_name);
+ fp = fopen(filename, "r");
+ if (fp == NULL) {
+ fprintf(stderr, "Can't open the file of %s\n",
+ filename);
+ continue;
}
- acpi_unmap_table(tbl);
- if (connect) {
- (*(u64*)offset) = lseek(fd, 0, SEEK_CUR);
+ /* Read the Table header to parse the table length */
+ count = fread(&table_header, 1, sizeof(struct acpi_table_header), fp);
+ if (count < sizeof(table_header)) {
+ /* the length is lessn than ACPI table header. skip it */
+ fclose(fp);
+ continue;
}
+ length = table_header.length;
+ ptr = malloc(table_header.length);
+ fseek(fp, 0, SEEK_SET);
+ readcount = 0;
+ while(!feof(fp) && readcount < length) {
+ count = fread(ptr + readcount, 1, 256, fp);
+ readcount += count;
+ }
+ fclose(fp);
+ ptable = (struct acpi_table_header *) ptr;
+ if (checksum((u8 *) ptable, ptable->length))
+ fprintf(stderr, "Wrong checksum "
+ "for dynamic SSDT table!\n");
+ write_table(fd, ptable, 0);
+ free(ptr);
}
- addr = (unsigned long)rsdp->xsdt_physical_address;
- if (connect) {
- rsdp->xsdt_physical_address = lseek(fd, 0, SEEK_CUR);
- }
- write_table(fd, sdt, addr);
- free (sdt);
- return 1;
+ closedir(tabledir);
+ return;
}
static void usage(const char *progname)
@@ -518,6 +510,7 @@ int main(int argc, char **argv)
goto not_found;
write(fd, raw, length);
acpi_unmap_memory(raw, length);
+ close(fd);
return 0;
}
@@ -540,12 +533,7 @@ int main(int argc, char **argv)
if (connect) {
lseek(fd, sizeof(struct acpi_rsdp_descriptor), SEEK_SET);
}
- if (rsdpx.revision > 1 && rsdpx.xsdt_physical_address) {
- /* ACPIDUMP uses xsdt table */
- if (!acpi_dump_XSDT(fd, &rsdpx))
- goto not_found;
- }
- if (!acpi_dump_RSDT(fd, &rsdpx))
+ if (!acpi_dump_SDT(fd, &rsdpx))
goto not_found;
if (connect) {
lseek(fd, 0, SEEK_SET);
@@ -560,8 +548,11 @@ int main(int argc, char **argv)
buff[0] = '\n';
write(fd, buff, 1);
}
+ acpi_dump_dynamic_SSDT(fd);
+ close(fd);
return 0;
not_found:
+ close(fd);
fprintf(stderr, "ACPI tables were not found. If you know location "
"of RSD PTR table (from dmesg, etc), "
"supply it with either --addr or -a option\n");
--
1.7.12.1.396.g16eed7c
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists