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/__support/macros/config.h" 11 #include "src/unistd/environ.h" 12 13 #include "src/__support/OSUtil/syscall.h" // For internal syscall function. 14 #include "src/__support/common.h" 15 16 #include "src/errno/libc_errno.h" 17 #include <sys/syscall.h> // For syscall numbers. 18 19 namespace LIBC_NAMESPACE_DECL { 20 21 LLVM_LIBC_FUNCTION(int, execve, 22 (const char *path, char *const argv[], char *const envp[])) { 23 int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_execve, path, argv, envp); 24 if (ret < 0) { 25 libc_errno = -ret; 26 return -1; 27 } 28 29 // Control will not reach here on success but have a return statement will 30 // keep the compilers happy. 31 return ret; 32 } 33 34 } // namespace LIBC_NAMESPACE_DECL 35