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| author | Bob Moore <robert.moore@intel.com> | 2018-01-04 13:41:27 -0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-01-05 01:33:22 +0100 |
| commit | ee68d4773ed36e3f79860bbcad0a4ddd8d58f393 (patch) | |
| tree | 5dd69e007decde8a5ca37b22a59f9b21a293333a /drivers/acpi | |
| parent | 2cb0ba70fbbf36f34c2c31fabe19a267ac4a14a3 (diff) | |
| download | linux-stable-ee68d4773ed36e3f79860bbcad0a4ddd8d58f393.tar.gz linux-stable-ee68d4773ed36e3f79860bbcad0a4ddd8d58f393.tar.bz2 linux-stable-ee68d4773ed36e3f79860bbcad0a4ddd8d58f393.zip | |
ACPICA: Create and deploy safe version of strncpy
ACPICA commit 64ad9c69a1bd534a466e060a33c0bbf5fc9e189c
acpi_ut_safe_strncpy - copy and terminate string. Strncpy is not
guaranteed to terminate the copied string if the input is longer
than the length of the target.
No functional change.
Link: https://github.com/acpica/acpica/commit/64ad9c69
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/acutils.h | 4 | ||||
| -rw-r--r-- | drivers/acpi/acpica/dbfileio.c | 4 | ||||
| -rw-r--r-- | drivers/acpi/acpica/psutils.c | 8 | ||||
| -rw-r--r-- | drivers/acpi/acpica/utnonansi.c | 11 | ||||
| -rw-r--r-- | drivers/acpi/acpica/uttrack.c | 4 |
5 files changed, 22 insertions, 9 deletions
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h index 8bb46d8623ca..b6b29d717824 100644 --- a/drivers/acpi/acpica/acutils.h +++ b/drivers/acpi/acpica/acutils.h @@ -638,9 +638,11 @@ void ut_convert_backslashes(char *pathname); void acpi_ut_repair_name(char *name); -#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION) +#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION) || defined (ACPI_DEBUG_OUTPUT) u8 acpi_ut_safe_strcpy(char *dest, acpi_size dest_size, char *source); +void acpi_ut_safe_strncpy(char *dest, char *source, acpi_size dest_size); + u8 acpi_ut_safe_strcat(char *dest, acpi_size dest_size, char *source); u8 diff --git a/drivers/acpi/acpica/dbfileio.c b/drivers/acpi/acpica/dbfileio.c index 4d81ea291d93..cf9607945704 100644 --- a/drivers/acpi/acpica/dbfileio.c +++ b/drivers/acpi/acpica/dbfileio.c @@ -99,8 +99,8 @@ void acpi_db_open_debug_file(char *name) } acpi_os_printf("Debug output file %s opened\n", name); - strncpy(acpi_gbl_db_debug_filename, name, - sizeof(acpi_gbl_db_debug_filename)); + acpi_ut_safe_strncpy(acpi_gbl_db_debug_filename, name, + sizeof(acpi_gbl_db_debug_filename)); acpi_gbl_db_output_to_file = TRUE; } #endif diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c index e15b636b1d4b..8bd7d01039cc 100644 --- a/drivers/acpi/acpica/psutils.c +++ b/drivers/acpi/acpica/psutils.c @@ -94,9 +94,11 @@ void acpi_ps_init_op(union acpi_parse_object *op, u16 opcode) op->common.descriptor_type = ACPI_DESC_TYPE_PARSER; op->common.aml_opcode = opcode; - ACPI_DISASM_ONLY_MEMBERS(strncpy(op->common.aml_op_name, - (acpi_ps_get_opcode_info(opcode))-> - name, sizeof(op->common.aml_op_name))); + ACPI_DISASM_ONLY_MEMBERS(acpi_ut_safe_strncpy(op->common.aml_op_name, + (acpi_ps_get_opcode_info + (opcode))->name, + sizeof(op->common. + aml_op_name))); } /******************************************************************************* diff --git a/drivers/acpi/acpica/utnonansi.c b/drivers/acpi/acpica/utnonansi.c index 792664982ea3..33a0970646df 100644 --- a/drivers/acpi/acpica/utnonansi.c +++ b/drivers/acpi/acpica/utnonansi.c @@ -140,7 +140,7 @@ int acpi_ut_stricmp(char *string1, char *string2) return (c1 - c2); } -#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION) +#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION) || defined (ACPI_DEBUG_OUTPUT) /******************************************************************************* * * FUNCTION: acpi_ut_safe_strcpy, acpi_ut_safe_strcat, acpi_ut_safe_strncat @@ -199,4 +199,13 @@ acpi_ut_safe_strncat(char *dest, strncat(dest, source, max_transfer_length); return (FALSE); } + +void acpi_ut_safe_strncpy(char *dest, char *source, acpi_size dest_size) +{ + /* Always terminate destination string */ + + strncpy(dest, source, dest_size); + dest[dest_size - 1] = 0; +} + #endif diff --git a/drivers/acpi/acpica/uttrack.c b/drivers/acpi/acpica/uttrack.c index 28a302eb2015..633b4e2c669f 100644 --- a/drivers/acpi/acpica/uttrack.c +++ b/drivers/acpi/acpica/uttrack.c @@ -402,8 +402,8 @@ acpi_ut_track_allocation(struct acpi_debug_mem_block *allocation, allocation->component = component; allocation->line = line; - strncpy(allocation->module, module, ACPI_MAX_MODULE_NAME); - allocation->module[ACPI_MAX_MODULE_NAME - 1] = 0; + acpi_ut_safe_strncpy(allocation->module, (char *)module, + ACPI_MAX_MODULE_NAME); if (!element) { |