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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - tools/perf/util/exec_cmd.c
65d86dcaa984cb6af78aaa4f021db0b115455338
4 #include "subcmd-config.h"
7 #include "subcmd-util.h"
11 static const char *argv_exec_path
;
12 static const char *argv0_path
;
14 void exec_cmd_init(const char *exec_name
, const char *prefix
,
15 const char *exec_path
, const char *exec_path_env
)
17 subcmd_config
.exec_name
= exec_name
;
18 subcmd_config
.prefix
= prefix
;
19 subcmd_config
.exec_path
= exec_path
;
20 subcmd_config
.exec_path_env
= exec_path_env
;
23 char *system_path(const char *path
)
27 if (is_absolute_path(path
))
30 astrcatf(&buf
, "%s/%s", subcmd_config
.prefix
, path
);
35 const char *perf_extract_argv0_path(const char *argv0
)
39 if (!argv0
|| !*argv0
)
41 slash
= argv0
+ strlen(argv0
);
43 while (argv0
<= slash
&& !is_dir_sep(*slash
))
47 argv0_path
= strndup(argv0
, slash
- argv0
);
48 return argv0_path
? slash
+ 1 : NULL
;
54 void perf_set_argv_exec_path(const char *exec_path
)
56 argv_exec_path
= exec_path
;
58 * Propagate this setting to external programs.
60 setenv(subcmd_config
.exec_path_env
, exec_path
, 1);
64 /* Returns the highest-priority, location to look for perf programs. */
65 char *perf_exec_path(void)
70 return strdup(argv_exec_path
);
72 env
= getenv(subcmd_config
.exec_path_env
);
76 return system_path(subcmd_config
.exec_path
);
79 static void add_path(char **out
, const char *path
)
82 if (is_absolute_path(path
))
85 astrcat(out
, make_nonrelative_path(path
));
93 const char *old_path
= getenv("PATH");
94 char *new_path
= NULL
;
95 char *tmp
= perf_exec_path();
97 add_path(&new_path
, tmp
);
98 add_path(&new_path
, argv0_path
);
102 astrcat(&new_path
, old_path
);
104 astrcat(&new_path
, "/usr/local/bin:/usr/bin:/bin");
106 setenv("PATH", new_path
, 1);
111 static const char **prepare_perf_cmd(const char **argv
)
116 for (argc
= 0; argv
[argc
]; argc
++)
117 ; /* just counting */
118 nargv
= malloc(sizeof(*nargv
) * (argc
+ 2));
120 nargv
[0] = subcmd_config
.exec_name
;
121 for (argc
= 0; argv
[argc
]; argc
++)
122 nargv
[argc
+ 1] = argv
[argc
];
123 nargv
[argc
+ 1] = NULL
;
127 int execv_perf_cmd(const char **argv
) {
128 const char **nargv
= prepare_perf_cmd(argv
);
130 /* execvp() can only ever return if it fails */
131 execvp(subcmd_config
.exec_name
, (char **)nargv
);
138 int execl_perf_cmd(const char *cmd
,...)
141 const char *argv
[MAX_ARGS
+ 1];
145 va_start(param
, cmd
);
148 while (argc
< MAX_ARGS
) {
149 arg
= argv
[argc
++] = va_arg(param
, char *);
154 if (MAX_ARGS
<= argc
)
155 return error("too many args to run %s", cmd
);
158 return execv_perf_cmd(argv
);