1 /* util.h 2 * Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 3 * Use of this source code is governed by a BSD-style license that can be 4 * found in the LICENSE file. 5 * 6 * Logging and other utility functions. 7 */ 8 9 #ifndef _UTIL_H_ 10 #define _UTIL_H_ 11 12 #include <stdlib.h> 13 #include <sys/types.h> 14 #include <syslog.h> 15 #include <unistd.h> 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 #define die(_msg, ...) do { \ 22 syslog(LOG_ERR, "libminijail[%d]: " _msg, getpid(), ## __VA_ARGS__); \ 23 abort(); \ 24 } while (0) 25 26 #define pdie(_msg, ...) \ 27 die(_msg ": %m", ## __VA_ARGS__) 28 29 #define warn(_msg, ...) \ 30 syslog(LOG_WARNING, "libminijail[%d]: " _msg, getpid(), ## __VA_ARGS__) 31 32 #define pwarn(_msg, ...) \ 33 warn(_msg ": %m", ## __VA_ARGS__) 34 35 #define info(_msg, ...) \ 36 syslog(LOG_INFO, "libminijail[%d]: " _msg, getpid(), ## __VA_ARGS__) 37 38 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 39 40 extern const char *log_syscalls[]; 41 extern const size_t log_syscalls_len; 42 43 static inline int is_android() { 44 #if defined(__ANDROID__) 45 return 1; 46 #else 47 return 0; 48 #endif 49 } 50 51 void __asan_init(void) __attribute__((weak)); 52 53 static inline int running_with_asan() { 54 return &__asan_init != 0; 55 } 56 57 int lookup_syscall(const char *name); 58 const char *lookup_syscall_name(int nr); 59 60 long int parse_constant(char *constant_str, char **endptr); 61 int parse_size(size_t *size, const char *sizespec); 62 63 char *strip(char *s); 64 char *tokenize(char **stringp, const char *delim); 65 66 char *path_join(const char *external_path, const char *internal_path); 67 int write_proc_file(pid_t pid, const char *content, const char *basename); 68 int write_pid_to_path(pid_t pid, const char *path); 69 70 /* 71 * consumebytes: consumes @length bytes from a buffer @buf of length @buflength 72 * @length Number of bytes to consume 73 * @buf Buffer to consume from 74 * @buflength Size of @buf 75 * 76 * Returns a pointer to the base of the bytes, or NULL for errors. 77 */ 78 void *consumebytes(size_t length, char **buf, size_t *buflength); 79 80 /* 81 * consumestr: consumes a C string from a buffer @buf of length @length 82 * @buf Buffer to consume 83 * @length Length of buffer 84 * 85 * Returns a pointer to the base of the string, or NULL for errors. 86 */ 87 char *consumestr(char **buf, size_t *buflength); 88 89 #ifdef __cplusplus 90 }; /* extern "C" */ 91 #endif 92 93 #endif /* _UTIL_H_ */ 94
