1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Utility functions for programs 4 * 5 * Copyright 2018 Google LLC 6 * 7 * Use of this source code is governed by an MIT-style 8 * license that can be found in the LICENSE file or at 9 * https://opensource.org/licenses/MIT. 10 */ 11 #ifndef PROGRAMS_UTILS_H 12 #define PROGRAMS_UTILS_H 13 14 #include "libfsverity.h" 15 #include "../common/common_defs.h" 16 17 #include <stdio.h> 18 #include <stdlib.h> 19 #include <string.h> 20 21 void *xmalloc(size_t size); 22 void *xzalloc(size_t size); 23 void *xmemdup(const void *mem, size_t size); 24 char *xstrdup(const char *s); 25 26 __printf(1, 2) __cold void error_msg(const char *format, ...); 27 __printf(1, 2) __cold void error_msg_errno(const char *format, ...); 28 __printf(1, 2) __cold __noreturn void fatal_error(const char *format, ...); 29 __cold __noreturn void assertion_failed(const char *expr, 30 const char *file, int line); 31 32 #define ASSERT(e) ({ if (!(e)) assertion_failed(#e, __FILE__, __LINE__); }) 33 34 void install_libfsverity_error_handler(void); 35 36 struct filedes { 37 int fd; 38 char *name; /* filename, for logging or error messages */ 39 }; 40 41 bool open_file(struct filedes *file, const char *filename, int flags, int mode); 42 bool get_file_size(struct filedes *file, u64 *size_ret); 43 bool full_read(struct filedes *file, void *buf, size_t count); 44 bool full_write(struct filedes *file, const void *buf, size_t count); 45 bool filedes_close(struct filedes *file); 46 int read_callback(void *file, void *buf, size_t count); 47 48 bool hex2bin(const char *hex, u8 *bin, size_t bin_len); 49 void bin2hex(const u8 *bin, size_t bin_len, char *hex); 50 51 #endif /* PROGRAMS_UTILS_H */ 52