7 static const char *argv_exec_path
;
8 static const char *argv0_path
;
10 const char *system_path(const char *path
)
12 static const char *prefix
= PREFIX
;
13 struct strbuf d
= STRBUF_INIT
;
15 if (is_absolute_path(path
))
18 strbuf_addf(&d
, "%s/%s", prefix
, path
);
19 path
= strbuf_detach(&d
, NULL
);
23 const char *git_extract_argv0_path(const char *argv0
)
27 if (!argv0
|| !*argv0
)
29 slash
= argv0
+ strlen(argv0
);
31 while (argv0
<= slash
&& !is_dir_sep(*slash
))
35 argv0_path
= xstrndup(argv0
, slash
- argv0
);
42 void git_set_argv_exec_path(const char *exec_path
)
44 argv_exec_path
= exec_path
;
48 /* Returns the highest-priority, location to look for git programs. */
49 const char *git_exec_path(void)
54 return argv_exec_path
;
56 env
= getenv(EXEC_PATH_ENVIRONMENT
);
61 return system_path(GIT_EXEC_PATH
);
64 static void add_path(struct strbuf
*out
, const char *path
)
67 if (is_absolute_path(path
))
68 strbuf_addstr(out
, path
);
70 strbuf_addstr(out
, make_nonrelative_path(path
));
72 strbuf_addch(out
, PATH_SEP
);
78 const char *old_path
= getenv("PATH");
79 struct strbuf new_path
= STRBUF_INIT
;
81 add_path(&new_path
, argv_exec_path
);
82 add_path(&new_path
, getenv(EXEC_PATH_ENVIRONMENT
));
83 add_path(&new_path
, system_path(GIT_EXEC_PATH
));
84 add_path(&new_path
, argv0_path
);
87 strbuf_addstr(&new_path
, old_path
);
89 strbuf_addstr(&new_path
, "/usr/local/bin:/usr/bin:/bin");
91 setenv("PATH", new_path
.buf
, 1);
93 strbuf_release(&new_path
);
96 const char **prepare_git_cmd(const char **argv
)
101 for (argc
= 0; argv
[argc
]; argc
++)
102 ; /* just counting */
103 nargv
= xmalloc(sizeof(*nargv
) * (argc
+ 2));
106 for (argc
= 0; argv
[argc
]; argc
++)
107 nargv
[argc
+ 1] = argv
[argc
];
108 nargv
[argc
+ 1] = NULL
;
112 int execv_git_cmd(const char **argv
) {
113 const char **nargv
= prepare_git_cmd(argv
);
114 trace_argv_printf(nargv
, "trace: exec:");
116 /* execvp() can only ever return if it fails */
117 execvp("git", (char **)nargv
);
119 trace_printf("trace: exec failed: %s\n", strerror(errno
));
126 int execl_git_cmd(const char *cmd
,...)
129 const char *argv
[MAX_ARGS
+ 1];
133 va_start(param
, cmd
);
136 while (argc
< MAX_ARGS
) {
137 arg
= argv
[argc
++] = va_arg(param
, char *);
142 if (MAX_ARGS
<= argc
)
143 return error("too many args to run %s", cmd
);
146 return execv_git_cmd(argv
);