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authorRob Landley <rob@landley.net>2013-07-19 02:03:02 -0500
committerRob Landley <rob@landley.net>2013-07-19 02:03:02 -0500
commitbb504f382dc6c596e6b2b9ce04931e7fbdd15bbe (patch)
tree984d3a0fa51dc8a326d46974bed8394a91be0a20
parenta817a02c00a06fbf2090259320968addb5f46e58 (diff)
downloadtoybox-bb504f382dc6c596e6b2b9ce04931e7fbdd15bbe.tar.gz
Start of TOYBOX_SINGLE support, for building standalone commands with no multiplexer.
-rw-r--r--Config.in6
-rw-r--r--lib/xwrap.c2
-rw-r--r--main.c59
3 files changed, 44 insertions, 23 deletions
diff --git a/Config.in b/Config.in
index b96d584f..9bac6076 100644
--- a/Config.in
+++ b/Config.in
@@ -17,6 +17,12 @@ config TOYBOX
With no arguments, shows available commands. First argument is
name of a command to run, followed by any arguments to that command.
+config TOYBOX_SINGLE
+ bool
+ default n
+ help
+ Build a single toybox command standalone with no multiplexer.
+
config TOYBOX_SUID
bool "SUID support"
default y
diff --git a/lib/xwrap.c b/lib/xwrap.c
index a0f64fd2..adf3e752 100644
--- a/lib/xwrap.c
+++ b/lib/xwrap.c
@@ -127,7 +127,7 @@ void xexec_optargs(int skip)
// with a path isn't a builtin, so /bin/sh won't match the builtin sh.
void xexec(char **argv)
{
- toy_exec(argv);
+ if (!CFG_TOYBOX_SINGLE) toy_exec(argv);
execvp(argv[0], argv);
perror_exit("exec %s", argv[0]);
diff --git a/main.c b/main.c
index ee16e64d..20ec5b10 100644
--- a/main.c
+++ b/main.c
@@ -60,6 +60,26 @@ static const int NEED_OPTIONS =
#include "generated/newtoys.h"
0; // Ends the opts || opts || opts...
+// Subset of init needed by singlemain
+static void toy_singleinit(struct toy_list *which, char *argv[])
+{
+ toys.which = which;
+ toys.argv = argv;
+
+ if (CFG_TOYBOX_HELP_DASHDASH && argv[1] && !strcmp(argv[1], "--help")) {
+ show_help();
+ xexit();
+ }
+
+ if (NEED_OPTIONS && which->options) get_optflags();
+ else {
+ toys.optargs = argv+1;
+ for (toys.optc=0; toys.optargs[toys.optc]; toys.optc++);
+ }
+ toys.old_umask = umask(0);
+ if (!(which->flags & TOYFLAG_UMASK)) umask(toys.old_umask);
+}
+
// Setup toybox global state for this command.
void toy_init(struct toy_list *which, char *argv[])
@@ -82,21 +102,8 @@ void toy_init(struct toy_list *which, char *argv[])
if (toys.optargs != toys.argv+1) free(toys.optargs);
memset(&toys, 0, offsetof(struct toy_context, rebound));
- toys.which = which;
- toys.argv = argv;
-
- if (CFG_TOYBOX_HELP_DASHDASH && argv[1] && !strcmp(argv[1], "--help")) {
- show_help();
- xexit();
- }
-
- if (NEED_OPTIONS && which->options) get_optflags();
- else {
- toys.optargs = argv+1;
- for (toys.optc=0; toys.optargs[toys.optc]; toys.optc++);
- }
- toys.old_umask = umask(0);
- if (!(which->flags & TOYFLAG_UMASK)) umask(toys.old_umask);
+ // Subset of init needed by singlemain.
+ toy_singleinit(which, argv);
}
// Like exec() but runs an internal toybox command instead of another file.
@@ -160,12 +167,20 @@ int main(int argc, char *argv[])
{
if (CFG_TOYBOX_I18N) setlocale(LC_ALL, "");
- // Trim path off of command name
- *argv = basename(*argv);
+ if (!CFG_TOYBOX_SINGLE) {
+ // Trim path off of command name
+ *argv = basename(*argv);
+
+ // Call the multiplexer, adjusting this argv[] to be its' argv[1].
+ // (It will adjust it back before calling toy_exec().)
+ toys.argv = argv-1;
+ toybox_main();
+ } else {
+ // a single toybox command built standalone with no multiplexer
+ toy_singleinit(toy_list, argv);
+ toy_list->toy_main();
+ if (fflush(NULL) || ferror(stdout)) perror_exit("write");
+ }
- // Call the multiplexer, adjusting this argv[] to be its' argv[1].
- // (It will adjust it back before calling toy_exec().)
- toys.argv = argv-1;
- toybox_main();
- return 0;
+ return toys.exitval;
}