minecraft-pi-reborn/libreborn/include/libreborn/exec.h

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#pragma once
#include <unistd.h>
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include "log.h"
#include "string.h"
#include "util.h"
// Safe execvpe()
__attribute__((noreturn)) static inline void safe_execvpe(const char *pathname, char *argv[], char *const envp[]) {
argv[0] = (char *) pathname;
int ret = execvpe(pathname, argv, envp);
if (ret == -1) {
ERR("Unable To Execute Program: %s: %s", pathname, strerror(errno));
} else {
ERR("%s", "Unknown execvpe() Error");
}
}
// Get Binary Directory (Remember To Free)
static inline char *get_binary_directory() {
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// Get Path To Current Executable
char *exe = realpath("/proc/self/exe", NULL);
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ALLOC_CHECK(exe);
// Chop Off Last Component
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int length = strlen(exe);
for (int i = length - 1; i >= 0; i--) {
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if (exe[i] == '/') {
exe[i] = '\0';
break;
}
}
// Return
return exe;
}
// Safe execvpe() Relative To Binary
__attribute__((noreturn)) static inline void safe_execvpe_relative_to_binary(const char *pathname, char *argv[], char *const envp[]) {
// Get Binary Directory
char *binary_directory = get_binary_directory();
// Create Full Path
char *full_path = NULL;
safe_asprintf(&full_path, "%s/%s", binary_directory, pathname);
// Free Binary Directory
free(binary_directory);
// Run
safe_execvpe(full_path, argv, envp);
}