diff options
Diffstat (limited to 'tools/perf/perf.c')
| -rw-r--r-- | tools/perf/perf.c | 129 |
1 files changed, 19 insertions, 110 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 6d5479e03e0d..4cc6960f6226 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -19,9 +19,15 @@ #include "util/debug.h" #include <api/fs/fs.h> #include <api/fs/tracing_path.h> +#include <errno.h> #include <pthread.h> +#include <signal.h> #include <stdlib.h> #include <time.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <linux/kernel.h> const char perf_usage_string[] = "perf [--version] [--help] [OPTIONS] COMMAND [ARGS]"; @@ -34,7 +40,7 @@ const char *input_name; struct cmd_struct { const char *cmd; - int (*fn)(int, const char **, const char *); + int (*fn)(int, const char **); int option; }; @@ -88,7 +94,7 @@ static int pager_command_config(const char *var, const char *value, void *data) } /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ -int check_pager_config(const char *cmd) +static int check_pager_config(const char *cmd) { int err; struct pager_config c; @@ -267,71 +273,6 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) return handled; } -static int handle_alias(int *argcp, const char ***argv) -{ - int envchanged = 0, ret = 0, saved_errno = errno; - int count, option_count; - const char **new_argv; - const char *alias_command; - char *alias_string; - - alias_command = (*argv)[0]; - alias_string = alias_lookup(alias_command); - if (alias_string) { - if (alias_string[0] == '!') { - if (*argcp > 1) { - struct strbuf buf; - - if (strbuf_init(&buf, PATH_MAX) < 0 || - strbuf_addstr(&buf, alias_string) < 0 || - sq_quote_argv(&buf, (*argv) + 1, - PATH_MAX) < 0) - die("Failed to allocate memory."); - free(alias_string); - alias_string = buf.buf; - } - ret = system(alias_string + 1); - if (ret >= 0 && WIFEXITED(ret) && - WEXITSTATUS(ret) != 127) - exit(WEXITSTATUS(ret)); - die("Failed to run '%s' when expanding alias '%s'", - alias_string + 1, alias_command); - } - count = split_cmdline(alias_string, &new_argv); - if (count < 0) - die("Bad alias.%s string", alias_command); - option_count = handle_options(&new_argv, &count, &envchanged); - if (envchanged) - die("alias '%s' changes environment variables\n" - "You can use '!perf' in the alias to do this.", - alias_command); - memmove(new_argv - option_count, new_argv, - count * sizeof(char *)); - new_argv -= option_count; - - if (count < 1) - die("empty alias for %s", alias_command); - - if (!strcmp(alias_command, new_argv[0])) - die("recursive alias: %s", alias_command); - - new_argv = realloc(new_argv, sizeof(char *) * - (count + *argcp + 1)); - /* insert after command name */ - memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); - new_argv[count + *argcp] = NULL; - - *argv = new_argv; - *argcp += count - 1; - - ret = 1; - } - - errno = saved_errno; - - return ret; -} - #define RUN_SETUP (1<<0) #define USE_PAGER (1<<1) @@ -339,13 +280,8 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) { int status; struct stat st; - const char *prefix; char sbuf[STRERR_BUFSIZE]; - prefix = NULL; - if (p->option & RUN_SETUP) - prefix = NULL; /* setup_perf_directory(); */ - if (use_browser == -1) use_browser = check_browser_config(p->cmd); @@ -356,7 +292,7 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) commit_pager_choice(); perf_env__set_cmdline(&perf_env, argc, argv); - status = p->fn(argc, argv, prefix); + status = p->fn(argc, argv); perf_config__exit(); exit_browser(status); perf_env__exit(&perf_env); @@ -397,16 +333,6 @@ static void handle_internal_command(int argc, const char **argv) { const char *cmd = argv[0]; unsigned int i; - static const char ext[] = STRIP_EXTENSION; - - if (sizeof(ext) > 1) { - i = strlen(argv[0]) - strlen(ext); - if (i > 0 && !strcmp(argv[0] + i, ext)) { - char *argv0 = strdup(argv[0]); - argv[0] = cmd = argv0; - argv0[i] = '\0'; - } - } /* Turn "perf cmd --help" into "perf help cmd" */ if (argc > 1 && !strcmp(argv[1], "--help")) { @@ -448,7 +374,8 @@ static void execv_dashed_external(const char **argv) if (status != -ERR_RUN_COMMAND_EXEC) { if (IS_RUN_COMMAND_ERR(status)) { do_die: - die("unable to run '%s'", argv[0]); + pr_err("FATAL: unable to run '%s'", argv[0]); + status = -128; } exit(-status); } @@ -460,25 +387,12 @@ do_die: static int run_argv(int *argcp, const char ***argv) { - int done_alias = 0; + /* See if it's an internal command */ + handle_internal_command(*argcp, *argv); - while (1) { - /* See if it's an internal command */ - handle_internal_command(*argcp, *argv); - - /* .. then try the external ones */ - execv_dashed_external(*argv); - - /* It could be an alias -- this works around the insanity - * of overriding "perf log" with "perf show" by having - * alias.log = show - */ - if (done_alias || !handle_alias(argcp, argv)) - break; - done_alias = 1; - } - - return done_alias; + /* .. then try the external ones */ + execv_dashed_external(*argv); + return 0; } static void pthread__block_sigwinch(void) @@ -566,7 +480,7 @@ int main(int argc, const char **argv) #ifdef HAVE_LIBAUDIT_SUPPORT setup_path(); argv[0] = "trace"; - return cmd_trace(argc, argv, NULL); + return cmd_trace(argc, argv); #else fprintf(stderr, "trace command not available: missing audit-libs devel package at build time.\n"); @@ -611,17 +525,12 @@ int main(int argc, const char **argv) while (1) { static int done_help; - int was_alias = run_argv(&argc, &argv); + + run_argv(&argc, &argv); if (errno != ENOENT) break; - if (was_alias) { - fprintf(stderr, "Expansion of alias '%s' failed; " - "'%s' is not a perf-command\n", - cmd, argv[0]); - goto out; - } if (!done_help) { cmd = argv[0] = help_unknown_cmd(cmd); done_help = 1; |