diff options
Diffstat (limited to 'src/hardware/cpuinfo.c')
-rw-r--r-- | src/hardware/cpuinfo.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/hardware/cpuinfo.c b/src/hardware/cpuinfo.c new file mode 100644 index 0000000..d80e1cb --- /dev/null +++ b/src/hardware/cpuinfo.c @@ -0,0 +1,145 @@ +/* + * Copyright (C) 2013 Red Hat, Inc. All rights reserved. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Authors: Peter Schiffer <pschiffe@redhat.com> + */ + +#include "cpuinfo.h" + + +/* + * Initialize CpuinfoProcessor attributes. + * @param cpu + */ +void init_cpuinfoprocessor_struct(CpuinfoProcessor *cpu) +{ + cpu->flags_nb = 0; + cpu->flags = NULL; + cpu->address_size = 0; + cpu->model_name = NULL; +} + +/* + * Check attributes of cpu structure and fill in defaults if needed. + * @param cpu + * @return 0 if success, negative value otherwise + */ +short check_cpuinfoprocessor_attributes(CpuinfoProcessor *cpu) +{ + short ret = -1; + + if (!cpu->model_name) { + if (!(cpu->model_name = strdup(""))) { + ret = -2; + goto done; + } + } + + ret = 0; + +done: + if (ret != 0) { + warn("Failed to allocate memory."); + } + + return ret; +} + +short cpuinfo_get_processor(CpuinfoProcessor *cpu) +{ + short ret = -1; + unsigned i, buffer_size = 0; + char **buffer = NULL, *buf; + + /* read /proc/cpuinfo file */ + if (read_file("/proc/cpuinfo", &buffer, &buffer_size) != 0) { + ret = -2; + goto done; + } + + init_cpuinfoprocessor_struct(cpu); + + /* parse information about processor */ + for (i = 0; i < buffer_size; i++) { + /* CPU Flags */ + buf = copy_string_part_after_delim(buffer[i], "flags\t\t: "); + if (buf) { + if (explode(buf, NULL, &cpu->flags, &cpu->flags_nb) != 0) { + ret = -3; + goto done; + } + free(buf); + buf = NULL; + continue; + } + /* Address Size */ + buf = copy_string_part_after_delim(buffer[i], " bits physical, "); + if (buf) { + sscanf(buf, "%u", &cpu->address_size); + free(buf); + buf = NULL; + continue; + } + /* Model Name */ + buf = copy_string_part_after_delim(buffer[i], "model name\t: "); + if (buf) { + cpu->model_name = buf; + buf = NULL; + continue; + } + } + + if (check_cpuinfoprocessor_attributes(cpu) != 0) { + ret = -4; + goto done; + } + + ret = 0; + +done: + free_2d_buffer(&buffer, &buffer_size); + + if (ret != 0) { + cpuinfo_free_processor(cpu); + } + + return ret; +} + +void cpuinfo_free_processor(CpuinfoProcessor *cpu) +{ + if (cpu) { + if (cpu->flags_nb > 0) { + unsigned i; + for (i = 0; i < cpu->flags_nb; i++) { + if (cpu->flags[i]) { + free(cpu->flags[i]); + } + cpu->flags[i] = NULL; + } + free(cpu->flags); + } + cpu->flags_nb = 0; + cpu->flags = NULL; + if (cpu->model_name) { + free(cpu->model_name); + } + cpu->model_name = NULL; + } + + return; +} |