| /* |
| * Helper functions for handling target threads/cpus |
| * |
| * Copyright (C) 2012, LG Electronics, Namhyung Kim <namhyung.kim@lge.com> |
| * |
| * Released under the GPL v2. |
| */ |
| |
| #include "target.h" |
| #include "debug.h" |
| |
| #include <pwd.h> |
| |
| |
| enum perf_target_errno perf_target__validate(struct perf_target *target) |
| { |
| enum perf_target_errno ret = PERF_ERRNO_TARGET__SUCCESS; |
| |
| if (target->pid) |
| target->tid = target->pid; |
| |
| /* CPU and PID are mutually exclusive */ |
| if (target->tid && target->cpu_list) { |
| target->cpu_list = NULL; |
| if (ret == PERF_ERRNO_TARGET__SUCCESS) |
| ret = PERF_ERRNO_TARGET__PID_OVERRIDE_CPU; |
| } |
| |
| /* UID and PID are mutually exclusive */ |
| if (target->tid && target->uid_str) { |
| target->uid_str = NULL; |
| if (ret == PERF_ERRNO_TARGET__SUCCESS) |
| ret = PERF_ERRNO_TARGET__PID_OVERRIDE_UID; |
| } |
| |
| /* UID and CPU are mutually exclusive */ |
| if (target->uid_str && target->cpu_list) { |
| target->cpu_list = NULL; |
| if (ret == PERF_ERRNO_TARGET__SUCCESS) |
| ret = PERF_ERRNO_TARGET__UID_OVERRIDE_CPU; |
| } |
| |
| /* PID and SYSTEM are mutually exclusive */ |
| if (target->tid && target->system_wide) { |
| target->system_wide = false; |
| if (ret == PERF_ERRNO_TARGET__SUCCESS) |
| ret = PERF_ERRNO_TARGET__PID_OVERRIDE_SYSTEM; |
| } |
| |
| /* UID and SYSTEM are mutually exclusive */ |
| if (target->uid_str && target->system_wide) { |
| target->system_wide = false; |
| if (ret == PERF_ERRNO_TARGET__SUCCESS) |
| ret = PERF_ERRNO_TARGET__UID_OVERRIDE_SYSTEM; |
| } |
| |
| return ret; |
| } |
| |
| enum perf_target_errno perf_target__parse_uid(struct perf_target *target) |
| { |
| struct passwd pwd, *result; |
| char buf[1024]; |
| const char *str = target->uid_str; |
| |
| target->uid = UINT_MAX; |
| if (str == NULL) |
| return PERF_ERRNO_TARGET__SUCCESS; |
| |
| /* Try user name first */ |
| getpwnam_r(str, &pwd, buf, sizeof(buf), &result); |
| |
| if (result == NULL) { |
| /* |
| * The user name not found. Maybe it's a UID number. |
| */ |
| char *endptr; |
| int uid = strtol(str, &endptr, 10); |
| |
| if (*endptr != '\0') |
| return PERF_ERRNO_TARGET__INVALID_UID; |
| |
| getpwuid_r(uid, &pwd, buf, sizeof(buf), &result); |
| |
| if (result == NULL) |
| return PERF_ERRNO_TARGET__USER_NOT_FOUND; |
| } |
| |
| target->uid = result->pw_uid; |
| return PERF_ERRNO_TARGET__SUCCESS; |
| } |