1 //===-- Linux implementation of execve ------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/unistd/execve.h" 10 #include "src/unistd/environ.h" 11 12 #include "src/__support/OSUtil/syscall.h" // For internal syscall function. 13 #include "src/__support/common.h" 14 15 #include "src/errno/libc_errno.h" 16 #include <sys/syscall.h> // For syscall numbers. 17 18 namespace LIBC_NAMESPACE { 19 20 LLVM_LIBC_FUNCTION(int, execve, 21 (const char *path, char *const argv[], char *const envp[])) { 22 int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_execve, path, argv, envp); 23 if (ret < 0) { 24 libc_errno = -ret; 25 return -1; 26 } 27 28 // Control will not reach here on success but have a return statement will 29 // keep the compilers happy. 30 return ret; 31 } 32 33 } // namespace LIBC_NAMESPACE 34