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am a3f89eab: add a run_program() function to edify

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Merge commit 'a3f89eabb7ddcf44add8ce3b321ceab6d35289cb' into eclair-plus-aosp

* commit 'a3f89eabb7ddcf44add8ce3b321ceab6d35289cb':
  add a run_program() function to edify
This commit is contained in:
Doug Zongker 2009-09-10 14:30:43 -07:00 committed by Android Git Automerger
commit b5d542cd40
1 changed files with 49 additions and 0 deletions
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49
updater/install.c
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@ -23,6 +23,7 @@
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "cutils/misc.h"
@ -759,6 +760,52 @@ char* UIPrintFn(const char* name, State* state, int argc, Expr* argv[]) {
return buffer;
}
char* RunProgramFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc < 1) {
return ErrorAbort(state, "%s() expects at least 1 arg", name);
}
char** args = ReadVarArgs(state, argc, argv);
if (args == NULL) {
return NULL;
}
char** args2 = malloc(sizeof(char*) * (argc+1));
memcpy(args2, args, sizeof(char*) * argc);
args2[argc] = NULL;
fprintf(stderr, "about to run program [%s] with %d args\n", args2[0], argc);
pid_t child = fork();
if (child == 0) {
execv(args2[0], args2);
fprintf(stderr, "run_program: execv failed: %s\n", strerror(errno));
_exit(1);
}
int status;
waitpid(child, &status, 0);
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) != 0) {
fprintf(stderr, "run_program: child exited with status %d\n",
WEXITSTATUS(status));
}
} else if (WIFSIGNALED(status)) {
fprintf(stderr, "run_program: child terminated by signal %d\n",
WTERMSIG(status));
}
int i;
for (i = 0; i < argc; ++i) {
free(args[i]);
}
free(args);
free(args2);
char buffer[20];
sprintf(buffer, "%d", status);
return strdup(buffer);
}
void RegisterInstallFunctions() {
RegisterFunction("mount", MountFn);
@ -785,4 +832,6 @@ void RegisterInstallFunctions() {
RegisterFunction("apply_patch_space", ApplyPatchFn);
RegisterFunction("ui_print", UIPrintFn);
RegisterFunction("run_program", RunProgramFn);
}