[9c9d11b] | 1 | #include <machine/rtems-bsd-user-space.h> |
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| 2 | |
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| 3 | /* |
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| 4 | * OS specific functions for UNIX/POSIX systems |
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| 5 | * Copyright (c) 2005-2009, Jouni Malinen <j@w1.fi> |
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| 6 | * |
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| 7 | * This software may be distributed under the terms of the BSD license. |
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| 8 | * See README for more details. |
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| 9 | */ |
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| 10 | |
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| 11 | #include "includes.h" |
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| 12 | |
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| 13 | #include <time.h> |
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| 14 | #include <sys/wait.h> |
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| 15 | |
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| 16 | #ifdef ANDROID |
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| 17 | #include <sys/capability.h> |
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| 18 | #include <sys/prctl.h> |
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| 19 | #include <private/android_filesystem_config.h> |
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| 20 | #endif /* ANDROID */ |
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| 21 | |
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| 22 | #ifdef __MACH__ |
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| 23 | #include <CoreServices/CoreServices.h> |
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| 24 | #include <mach/mach.h> |
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| 25 | #include <mach/mach_time.h> |
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| 26 | #endif /* __MACH__ */ |
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| 27 | |
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[8f2267b] | 28 | #ifdef __rtems__ |
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| 29 | #include <unistd.h> |
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| 30 | #endif /* __rtems__ */ |
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| 31 | |
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| 32 | |
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[9c9d11b] | 33 | #include "os.h" |
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| 34 | #include "common.h" |
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| 35 | |
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| 36 | #ifdef WPA_TRACE |
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| 37 | |
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| 38 | #include "wpa_debug.h" |
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| 39 | #include "trace.h" |
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| 40 | #include "list.h" |
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| 41 | |
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| 42 | static struct dl_list alloc_list = DL_LIST_HEAD_INIT(alloc_list); |
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| 43 | |
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| 44 | #define ALLOC_MAGIC 0xa84ef1b2 |
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| 45 | #define FREED_MAGIC 0x67fd487a |
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| 46 | |
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| 47 | struct os_alloc_trace { |
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| 48 | unsigned int magic; |
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| 49 | struct dl_list list; |
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| 50 | size_t len; |
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| 51 | WPA_TRACE_INFO |
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| 52 | } __attribute__((aligned(16))); |
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| 53 | |
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| 54 | #endif /* WPA_TRACE */ |
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| 55 | |
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| 56 | |
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| 57 | void os_sleep(os_time_t sec, os_time_t usec) |
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| 58 | { |
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| 59 | if (sec) |
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| 60 | sleep(sec); |
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| 61 | if (usec) |
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| 62 | usleep(usec); |
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| 63 | } |
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| 64 | |
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| 65 | |
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| 66 | int os_get_time(struct os_time *t) |
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| 67 | { |
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| 68 | int res; |
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| 69 | struct timeval tv; |
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| 70 | res = gettimeofday(&tv, NULL); |
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| 71 | t->sec = tv.tv_sec; |
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| 72 | t->usec = tv.tv_usec; |
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| 73 | return res; |
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| 74 | } |
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| 75 | |
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| 76 | |
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| 77 | int os_get_reltime(struct os_reltime *t) |
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| 78 | { |
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| 79 | #ifndef __MACH__ |
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| 80 | #if defined(CLOCK_BOOTTIME) |
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| 81 | static clockid_t clock_id = CLOCK_BOOTTIME; |
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| 82 | #elif defined(CLOCK_MONOTONIC) |
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| 83 | static clockid_t clock_id = CLOCK_MONOTONIC; |
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| 84 | #else |
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| 85 | static clockid_t clock_id = CLOCK_REALTIME; |
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| 86 | #endif |
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| 87 | struct timespec ts; |
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| 88 | int res; |
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| 89 | |
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| 90 | while (1) { |
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| 91 | res = clock_gettime(clock_id, &ts); |
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| 92 | if (res == 0) { |
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| 93 | t->sec = ts.tv_sec; |
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| 94 | t->usec = ts.tv_nsec / 1000; |
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| 95 | return 0; |
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| 96 | } |
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| 97 | switch (clock_id) { |
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| 98 | #ifdef CLOCK_BOOTTIME |
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| 99 | case CLOCK_BOOTTIME: |
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| 100 | clock_id = CLOCK_MONOTONIC; |
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| 101 | break; |
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| 102 | #endif |
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| 103 | #ifdef CLOCK_MONOTONIC |
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| 104 | case CLOCK_MONOTONIC: |
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| 105 | clock_id = CLOCK_REALTIME; |
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| 106 | break; |
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| 107 | #endif |
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| 108 | case CLOCK_REALTIME: |
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| 109 | return -1; |
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| 110 | } |
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| 111 | } |
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| 112 | #else /* __MACH__ */ |
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| 113 | uint64_t abstime, nano; |
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| 114 | static mach_timebase_info_data_t info = { 0, 0 }; |
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| 115 | |
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| 116 | if (!info.denom) { |
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| 117 | if (mach_timebase_info(&info) != KERN_SUCCESS) |
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| 118 | return -1; |
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| 119 | } |
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| 120 | |
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| 121 | abstime = mach_absolute_time(); |
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| 122 | nano = (abstime * info.numer) / info.denom; |
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| 123 | |
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| 124 | t->sec = nano / NSEC_PER_SEC; |
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| 125 | t->usec = (nano - (((uint64_t) t->sec) * NSEC_PER_SEC)) / NSEC_PER_USEC; |
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| 126 | |
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| 127 | return 0; |
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| 128 | #endif /* __MACH__ */ |
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| 129 | } |
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| 130 | |
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| 131 | |
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| 132 | int os_mktime(int year, int month, int day, int hour, int min, int sec, |
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| 133 | os_time_t *t) |
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| 134 | { |
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| 135 | struct tm tm, *tm1; |
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| 136 | time_t t_local, t1, t2; |
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| 137 | os_time_t tz_offset; |
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| 138 | |
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| 139 | if (year < 1970 || month < 1 || month > 12 || day < 1 || day > 31 || |
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| 140 | hour < 0 || hour > 23 || min < 0 || min > 59 || sec < 0 || |
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| 141 | sec > 60) |
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| 142 | return -1; |
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| 143 | |
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| 144 | memset(&tm, 0, sizeof(tm)); |
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| 145 | tm.tm_year = year - 1900; |
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| 146 | tm.tm_mon = month - 1; |
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| 147 | tm.tm_mday = day; |
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| 148 | tm.tm_hour = hour; |
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| 149 | tm.tm_min = min; |
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| 150 | tm.tm_sec = sec; |
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| 151 | |
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| 152 | t_local = mktime(&tm); |
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| 153 | |
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| 154 | /* figure out offset to UTC */ |
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| 155 | tm1 = localtime(&t_local); |
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| 156 | if (tm1) { |
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| 157 | t1 = mktime(tm1); |
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| 158 | tm1 = gmtime(&t_local); |
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| 159 | if (tm1) { |
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| 160 | t2 = mktime(tm1); |
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| 161 | tz_offset = t2 - t1; |
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| 162 | } else |
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| 163 | tz_offset = 0; |
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| 164 | } else |
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| 165 | tz_offset = 0; |
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| 166 | |
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| 167 | *t = (os_time_t) t_local - tz_offset; |
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| 168 | return 0; |
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| 169 | } |
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| 170 | |
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| 171 | |
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| 172 | int os_gmtime(os_time_t t, struct os_tm *tm) |
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| 173 | { |
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| 174 | struct tm *tm2; |
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| 175 | time_t t2 = t; |
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| 176 | |
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| 177 | tm2 = gmtime(&t2); |
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| 178 | if (tm2 == NULL) |
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| 179 | return -1; |
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| 180 | tm->sec = tm2->tm_sec; |
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| 181 | tm->min = tm2->tm_min; |
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| 182 | tm->hour = tm2->tm_hour; |
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| 183 | tm->day = tm2->tm_mday; |
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| 184 | tm->month = tm2->tm_mon + 1; |
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| 185 | tm->year = tm2->tm_year + 1900; |
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| 186 | return 0; |
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| 187 | } |
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| 188 | |
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| 189 | |
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| 190 | #ifdef __APPLE__ |
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| 191 | #include <fcntl.h> |
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| 192 | static int os_daemon(int nochdir, int noclose) |
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| 193 | { |
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| 194 | int devnull; |
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| 195 | |
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| 196 | if (chdir("/") < 0) |
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| 197 | return -1; |
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| 198 | |
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| 199 | devnull = open("/dev/null", O_RDWR); |
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| 200 | if (devnull < 0) |
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| 201 | return -1; |
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| 202 | |
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| 203 | if (dup2(devnull, STDIN_FILENO) < 0) { |
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| 204 | close(devnull); |
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| 205 | return -1; |
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| 206 | } |
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| 207 | |
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| 208 | if (dup2(devnull, STDOUT_FILENO) < 0) { |
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| 209 | close(devnull); |
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| 210 | return -1; |
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| 211 | } |
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| 212 | |
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| 213 | if (dup2(devnull, STDERR_FILENO) < 0) { |
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| 214 | close(devnull); |
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| 215 | return -1; |
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| 216 | } |
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| 217 | |
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| 218 | return 0; |
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| 219 | } |
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| 220 | #else /* __APPLE__ */ |
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| 221 | #define os_daemon daemon |
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| 222 | #endif /* __APPLE__ */ |
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| 223 | |
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| 224 | |
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| 225 | #ifdef __FreeBSD__ |
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| 226 | #include <err.h> |
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| 227 | #include <libutil.h> |
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| 228 | #include <stdint.h> |
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| 229 | #endif /* __FreeBSD__ */ |
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| 230 | |
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| 231 | int os_daemonize(const char *pid_file) |
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| 232 | { |
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[8f2267b] | 233 | #if defined(__uClinux__) || defined(__sun__) || defined(__rtems__) |
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[9c9d11b] | 234 | return -1; |
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| 235 | #else /* defined(__uClinux__) || defined(__sun__) */ |
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| 236 | #ifdef __FreeBSD__ |
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| 237 | pid_t otherpid; |
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| 238 | struct pidfh *pfh; |
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| 239 | |
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| 240 | pfh = pidfile_open(pid_file, 0600, &otherpid); |
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| 241 | if (pfh == NULL) { |
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| 242 | if (errno == EEXIST) { |
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| 243 | errx(1, "Daemon already running, pid: %jd.", |
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| 244 | (intmax_t)otherpid); |
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| 245 | } |
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| 246 | warn("Cannot open or create pidfile."); |
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| 247 | } |
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| 248 | #endif /* __FreeBSD__ */ |
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| 249 | |
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| 250 | if (os_daemon(0, 0)) { |
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| 251 | perror("daemon"); |
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| 252 | #ifdef __FreeBSD__ |
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| 253 | pidfile_remove(pfh); |
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| 254 | #endif /* __FreeBSD__ */ |
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| 255 | return -1; |
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| 256 | } |
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| 257 | |
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| 258 | #ifndef __FreeBSD__ |
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| 259 | if (pid_file) { |
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| 260 | FILE *f = fopen(pid_file, "w"); |
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| 261 | if (f) { |
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| 262 | fprintf(f, "%u\n", getpid()); |
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| 263 | fclose(f); |
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| 264 | } |
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| 265 | } |
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| 266 | #else /* __FreeBSD__ */ |
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| 267 | pidfile_write(pfh); |
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| 268 | #endif /* __FreeBSD__ */ |
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| 269 | |
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| 270 | return -0; |
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| 271 | #endif /* defined(__uClinux__) || defined(__sun__) */ |
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| 272 | } |
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| 273 | |
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| 274 | |
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| 275 | void os_daemonize_terminate(const char *pid_file) |
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| 276 | { |
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| 277 | if (pid_file) |
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| 278 | unlink(pid_file); |
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| 279 | } |
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| 280 | |
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| 281 | |
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| 282 | int os_get_random(unsigned char *buf, size_t len) |
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| 283 | { |
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| 284 | FILE *f; |
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| 285 | size_t rc; |
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| 286 | |
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| 287 | if (TEST_FAIL()) |
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| 288 | return -1; |
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| 289 | |
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[8f2267b] | 290 | #ifdef __rtems__ |
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| 291 | return getentropy(buf, len); |
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| 292 | #else /* __rtems__ */ |
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[9c9d11b] | 293 | f = fopen("/dev/urandom", "rb"); |
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| 294 | if (f == NULL) { |
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| 295 | printf("Could not open /dev/urandom.\n"); |
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| 296 | return -1; |
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| 297 | } |
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| 298 | |
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| 299 | rc = fread(buf, 1, len, f); |
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| 300 | fclose(f); |
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| 301 | |
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| 302 | return rc != len ? -1 : 0; |
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[8f2267b] | 303 | #endif /* __rtems__ */ |
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[9c9d11b] | 304 | } |
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| 305 | |
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| 306 | |
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| 307 | unsigned long os_random(void) |
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| 308 | { |
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| 309 | return random(); |
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| 310 | } |
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| 311 | |
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| 312 | |
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| 313 | char * os_rel2abs_path(const char *rel_path) |
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| 314 | { |
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| 315 | char *buf = NULL, *cwd, *ret; |
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| 316 | size_t len = 128, cwd_len, rel_len, ret_len; |
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| 317 | int last_errno; |
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| 318 | |
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| 319 | if (!rel_path) |
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| 320 | return NULL; |
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| 321 | |
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| 322 | if (rel_path[0] == '/') |
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| 323 | return os_strdup(rel_path); |
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| 324 | |
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| 325 | for (;;) { |
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| 326 | buf = os_malloc(len); |
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| 327 | if (buf == NULL) |
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| 328 | return NULL; |
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| 329 | cwd = getcwd(buf, len); |
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| 330 | if (cwd == NULL) { |
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| 331 | last_errno = errno; |
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| 332 | os_free(buf); |
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| 333 | if (last_errno != ERANGE) |
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| 334 | return NULL; |
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| 335 | len *= 2; |
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| 336 | if (len > 2000) |
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| 337 | return NULL; |
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| 338 | } else { |
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| 339 | buf[len - 1] = '\0'; |
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| 340 | break; |
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| 341 | } |
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| 342 | } |
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| 343 | |
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| 344 | cwd_len = os_strlen(cwd); |
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| 345 | rel_len = os_strlen(rel_path); |
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| 346 | ret_len = cwd_len + 1 + rel_len + 1; |
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| 347 | ret = os_malloc(ret_len); |
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| 348 | if (ret) { |
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| 349 | os_memcpy(ret, cwd, cwd_len); |
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| 350 | ret[cwd_len] = '/'; |
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| 351 | os_memcpy(ret + cwd_len + 1, rel_path, rel_len); |
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| 352 | ret[ret_len - 1] = '\0'; |
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| 353 | } |
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| 354 | os_free(buf); |
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| 355 | return ret; |
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| 356 | } |
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| 357 | |
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| 358 | |
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| 359 | int os_program_init(void) |
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| 360 | { |
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| 361 | #ifdef ANDROID |
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| 362 | /* |
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| 363 | * We ignore errors here since errors are normal if we |
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| 364 | * are already running as non-root. |
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| 365 | */ |
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| 366 | #ifdef ANDROID_SETGROUPS_OVERRIDE |
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| 367 | gid_t groups[] = { ANDROID_SETGROUPS_OVERRIDE }; |
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| 368 | #else /* ANDROID_SETGROUPS_OVERRIDE */ |
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| 369 | gid_t groups[] = { AID_INET, AID_WIFI, AID_KEYSTORE }; |
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| 370 | #endif /* ANDROID_SETGROUPS_OVERRIDE */ |
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| 371 | struct __user_cap_header_struct header; |
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| 372 | struct __user_cap_data_struct cap; |
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| 373 | |
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| 374 | setgroups(ARRAY_SIZE(groups), groups); |
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| 375 | |
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| 376 | prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0); |
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| 377 | |
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| 378 | setgid(AID_WIFI); |
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| 379 | setuid(AID_WIFI); |
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| 380 | |
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| 381 | header.version = _LINUX_CAPABILITY_VERSION; |
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| 382 | header.pid = 0; |
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| 383 | cap.effective = cap.permitted = |
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| 384 | (1 << CAP_NET_ADMIN) | (1 << CAP_NET_RAW); |
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| 385 | cap.inheritable = 0; |
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| 386 | capset(&header, &cap); |
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| 387 | #endif /* ANDROID */ |
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| 388 | |
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| 389 | return 0; |
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| 390 | } |
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| 391 | |
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| 392 | |
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| 393 | void os_program_deinit(void) |
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| 394 | { |
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| 395 | #ifdef WPA_TRACE |
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| 396 | struct os_alloc_trace *a; |
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| 397 | unsigned long total = 0; |
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| 398 | dl_list_for_each(a, &alloc_list, struct os_alloc_trace, list) { |
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| 399 | total += a->len; |
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| 400 | if (a->magic != ALLOC_MAGIC) { |
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| 401 | wpa_printf(MSG_INFO, "MEMLEAK[%p]: invalid magic 0x%x " |
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| 402 | "len %lu", |
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| 403 | a, a->magic, (unsigned long) a->len); |
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| 404 | continue; |
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| 405 | } |
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| 406 | wpa_printf(MSG_INFO, "MEMLEAK[%p]: len %lu", |
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| 407 | a, (unsigned long) a->len); |
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| 408 | wpa_trace_dump("memleak", a); |
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| 409 | } |
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| 410 | if (total) |
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| 411 | wpa_printf(MSG_INFO, "MEMLEAK: total %lu bytes", |
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| 412 | (unsigned long) total); |
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| 413 | #endif /* WPA_TRACE */ |
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| 414 | } |
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| 415 | |
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| 416 | |
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| 417 | int os_setenv(const char *name, const char *value, int overwrite) |
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| 418 | { |
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| 419 | return setenv(name, value, overwrite); |
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| 420 | } |
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| 421 | |
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| 422 | |
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| 423 | int os_unsetenv(const char *name) |
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| 424 | { |
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| 425 | #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__) || \ |
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| 426 | defined(__OpenBSD__) |
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| 427 | unsetenv(name); |
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| 428 | return 0; |
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| 429 | #else |
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| 430 | return unsetenv(name); |
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| 431 | #endif |
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| 432 | } |
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| 433 | |
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| 434 | |
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| 435 | char * os_readfile(const char *name, size_t *len) |
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| 436 | { |
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| 437 | FILE *f; |
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| 438 | char *buf; |
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| 439 | long pos; |
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| 440 | |
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| 441 | f = fopen(name, "rb"); |
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| 442 | if (f == NULL) |
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| 443 | return NULL; |
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| 444 | |
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| 445 | if (fseek(f, 0, SEEK_END) < 0 || (pos = ftell(f)) < 0) { |
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| 446 | fclose(f); |
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| 447 | return NULL; |
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| 448 | } |
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| 449 | *len = pos; |
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| 450 | if (fseek(f, 0, SEEK_SET) < 0) { |
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| 451 | fclose(f); |
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| 452 | return NULL; |
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| 453 | } |
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| 454 | |
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| 455 | buf = os_malloc(*len); |
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| 456 | if (buf == NULL) { |
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| 457 | fclose(f); |
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| 458 | return NULL; |
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| 459 | } |
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| 460 | |
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| 461 | if (fread(buf, 1, *len, f) != *len) { |
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| 462 | fclose(f); |
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| 463 | os_free(buf); |
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| 464 | return NULL; |
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| 465 | } |
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| 466 | |
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| 467 | fclose(f); |
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| 468 | |
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| 469 | return buf; |
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| 470 | } |
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| 471 | |
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| 472 | |
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| 473 | int os_file_exists(const char *fname) |
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| 474 | { |
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| 475 | FILE *f = fopen(fname, "rb"); |
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| 476 | if (f == NULL) |
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| 477 | return 0; |
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| 478 | fclose(f); |
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| 479 | return 1; |
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| 480 | } |
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| 481 | |
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| 482 | |
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| 483 | int os_fdatasync(FILE *stream) |
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| 484 | { |
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| 485 | if (!fflush(stream)) { |
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| 486 | #ifdef __linux__ |
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| 487 | return fdatasync(fileno(stream)); |
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| 488 | #else /* !__linux__ */ |
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| 489 | #ifdef F_FULLFSYNC |
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| 490 | /* OS X does not implement fdatasync(). */ |
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| 491 | return fcntl(fileno(stream), F_FULLFSYNC); |
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| 492 | #else /* F_FULLFSYNC */ |
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| 493 | return fsync(fileno(stream)); |
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| 494 | #endif /* F_FULLFSYNC */ |
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| 495 | #endif /* __linux__ */ |
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| 496 | } |
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| 497 | |
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| 498 | return -1; |
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| 499 | } |
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| 500 | |
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| 501 | |
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| 502 | #ifndef WPA_TRACE |
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| 503 | void * os_zalloc(size_t size) |
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| 504 | { |
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| 505 | return calloc(1, size); |
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| 506 | } |
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| 507 | #endif /* WPA_TRACE */ |
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| 508 | |
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| 509 | |
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| 510 | size_t os_strlcpy(char *dest, const char *src, size_t siz) |
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| 511 | { |
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| 512 | const char *s = src; |
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| 513 | size_t left = siz; |
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| 514 | |
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| 515 | if (left) { |
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| 516 | /* Copy string up to the maximum size of the dest buffer */ |
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| 517 | while (--left != 0) { |
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| 518 | if ((*dest++ = *s++) == '\0') |
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| 519 | break; |
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| 520 | } |
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| 521 | } |
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| 522 | |
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| 523 | if (left == 0) { |
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| 524 | /* Not enough room for the string; force NUL-termination */ |
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| 525 | if (siz != 0) |
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| 526 | *dest = '\0'; |
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| 527 | while (*s++) |
---|
| 528 | ; /* determine total src string length */ |
---|
| 529 | } |
---|
| 530 | |
---|
| 531 | return s - src - 1; |
---|
| 532 | } |
---|
| 533 | |
---|
| 534 | |
---|
| 535 | int os_memcmp_const(const void *a, const void *b, size_t len) |
---|
| 536 | { |
---|
| 537 | const u8 *aa = a; |
---|
| 538 | const u8 *bb = b; |
---|
| 539 | size_t i; |
---|
| 540 | u8 res; |
---|
| 541 | |
---|
| 542 | for (res = 0, i = 0; i < len; i++) |
---|
| 543 | res |= aa[i] ^ bb[i]; |
---|
| 544 | |
---|
| 545 | return res; |
---|
| 546 | } |
---|
| 547 | |
---|
| 548 | |
---|
| 549 | #ifdef WPA_TRACE |
---|
| 550 | |
---|
| 551 | #if defined(WPA_TRACE_BFD) && defined(CONFIG_TESTING_OPTIONS) |
---|
| 552 | char wpa_trace_fail_func[256] = { 0 }; |
---|
| 553 | unsigned int wpa_trace_fail_after; |
---|
| 554 | |
---|
| 555 | static int testing_fail_alloc(void) |
---|
| 556 | { |
---|
| 557 | const char *func[WPA_TRACE_LEN]; |
---|
| 558 | size_t i, res, len; |
---|
| 559 | char *pos, *next; |
---|
| 560 | int match; |
---|
| 561 | |
---|
| 562 | if (!wpa_trace_fail_after) |
---|
| 563 | return 0; |
---|
| 564 | |
---|
| 565 | res = wpa_trace_calling_func(func, WPA_TRACE_LEN); |
---|
| 566 | i = 0; |
---|
| 567 | if (i < res && os_strcmp(func[i], __func__) == 0) |
---|
| 568 | i++; |
---|
| 569 | if (i < res && os_strcmp(func[i], "os_malloc") == 0) |
---|
| 570 | i++; |
---|
| 571 | if (i < res && os_strcmp(func[i], "os_zalloc") == 0) |
---|
| 572 | i++; |
---|
| 573 | if (i < res && os_strcmp(func[i], "os_calloc") == 0) |
---|
| 574 | i++; |
---|
| 575 | if (i < res && os_strcmp(func[i], "os_realloc") == 0) |
---|
| 576 | i++; |
---|
| 577 | if (i < res && os_strcmp(func[i], "os_realloc_array") == 0) |
---|
| 578 | i++; |
---|
| 579 | if (i < res && os_strcmp(func[i], "os_strdup") == 0) |
---|
| 580 | i++; |
---|
| 581 | |
---|
| 582 | pos = wpa_trace_fail_func; |
---|
| 583 | |
---|
| 584 | match = 0; |
---|
| 585 | while (i < res) { |
---|
| 586 | int allow_skip = 1; |
---|
| 587 | int maybe = 0; |
---|
| 588 | |
---|
| 589 | if (*pos == '=') { |
---|
| 590 | allow_skip = 0; |
---|
| 591 | pos++; |
---|
| 592 | } else if (*pos == '?') { |
---|
| 593 | maybe = 1; |
---|
| 594 | pos++; |
---|
| 595 | } |
---|
| 596 | next = os_strchr(pos, ';'); |
---|
| 597 | if (next) |
---|
| 598 | len = next - pos; |
---|
| 599 | else |
---|
| 600 | len = os_strlen(pos); |
---|
| 601 | if (os_memcmp(pos, func[i], len) != 0) { |
---|
| 602 | if (maybe && next) { |
---|
| 603 | pos = next + 1; |
---|
| 604 | continue; |
---|
| 605 | } |
---|
| 606 | if (allow_skip) { |
---|
| 607 | i++; |
---|
| 608 | continue; |
---|
| 609 | } |
---|
| 610 | return 0; |
---|
| 611 | } |
---|
| 612 | if (!next) { |
---|
| 613 | match = 1; |
---|
| 614 | break; |
---|
| 615 | } |
---|
| 616 | pos = next + 1; |
---|
| 617 | i++; |
---|
| 618 | } |
---|
| 619 | if (!match) |
---|
| 620 | return 0; |
---|
| 621 | |
---|
| 622 | wpa_trace_fail_after--; |
---|
| 623 | if (wpa_trace_fail_after == 0) { |
---|
| 624 | wpa_printf(MSG_INFO, "TESTING: fail allocation at %s", |
---|
| 625 | wpa_trace_fail_func); |
---|
| 626 | for (i = 0; i < res; i++) |
---|
| 627 | wpa_printf(MSG_INFO, "backtrace[%d] = %s", |
---|
| 628 | (int) i, func[i]); |
---|
| 629 | return 1; |
---|
| 630 | } |
---|
| 631 | |
---|
| 632 | return 0; |
---|
| 633 | } |
---|
| 634 | |
---|
| 635 | |
---|
| 636 | char wpa_trace_test_fail_func[256] = { 0 }; |
---|
| 637 | unsigned int wpa_trace_test_fail_after; |
---|
| 638 | |
---|
| 639 | int testing_test_fail(void) |
---|
| 640 | { |
---|
| 641 | const char *func[WPA_TRACE_LEN]; |
---|
| 642 | size_t i, res, len; |
---|
| 643 | char *pos, *next; |
---|
| 644 | int match; |
---|
| 645 | |
---|
| 646 | if (!wpa_trace_test_fail_after) |
---|
| 647 | return 0; |
---|
| 648 | |
---|
| 649 | res = wpa_trace_calling_func(func, WPA_TRACE_LEN); |
---|
| 650 | i = 0; |
---|
| 651 | if (i < res && os_strcmp(func[i], __func__) == 0) |
---|
| 652 | i++; |
---|
| 653 | |
---|
| 654 | pos = wpa_trace_test_fail_func; |
---|
| 655 | |
---|
| 656 | match = 0; |
---|
| 657 | while (i < res) { |
---|
| 658 | int allow_skip = 1; |
---|
| 659 | int maybe = 0; |
---|
| 660 | |
---|
| 661 | if (*pos == '=') { |
---|
| 662 | allow_skip = 0; |
---|
| 663 | pos++; |
---|
| 664 | } else if (*pos == '?') { |
---|
| 665 | maybe = 1; |
---|
| 666 | pos++; |
---|
| 667 | } |
---|
| 668 | next = os_strchr(pos, ';'); |
---|
| 669 | if (next) |
---|
| 670 | len = next - pos; |
---|
| 671 | else |
---|
| 672 | len = os_strlen(pos); |
---|
| 673 | if (os_memcmp(pos, func[i], len) != 0) { |
---|
| 674 | if (maybe && next) { |
---|
| 675 | pos = next + 1; |
---|
| 676 | continue; |
---|
| 677 | } |
---|
| 678 | if (allow_skip) { |
---|
| 679 | i++; |
---|
| 680 | continue; |
---|
| 681 | } |
---|
| 682 | return 0; |
---|
| 683 | } |
---|
| 684 | if (!next) { |
---|
| 685 | match = 1; |
---|
| 686 | break; |
---|
| 687 | } |
---|
| 688 | pos = next + 1; |
---|
| 689 | i++; |
---|
| 690 | } |
---|
| 691 | if (!match) |
---|
| 692 | return 0; |
---|
| 693 | |
---|
| 694 | wpa_trace_test_fail_after--; |
---|
| 695 | if (wpa_trace_test_fail_after == 0) { |
---|
| 696 | wpa_printf(MSG_INFO, "TESTING: fail at %s", |
---|
| 697 | wpa_trace_test_fail_func); |
---|
| 698 | for (i = 0; i < res; i++) |
---|
| 699 | wpa_printf(MSG_INFO, "backtrace[%d] = %s", |
---|
| 700 | (int) i, func[i]); |
---|
| 701 | return 1; |
---|
| 702 | } |
---|
| 703 | |
---|
| 704 | return 0; |
---|
| 705 | } |
---|
| 706 | |
---|
| 707 | #else |
---|
| 708 | |
---|
| 709 | static inline int testing_fail_alloc(void) |
---|
| 710 | { |
---|
| 711 | return 0; |
---|
| 712 | } |
---|
| 713 | #endif |
---|
| 714 | |
---|
| 715 | void * os_malloc(size_t size) |
---|
| 716 | { |
---|
| 717 | struct os_alloc_trace *a; |
---|
| 718 | |
---|
| 719 | if (testing_fail_alloc()) |
---|
| 720 | return NULL; |
---|
| 721 | |
---|
| 722 | a = malloc(sizeof(*a) + size); |
---|
| 723 | if (a == NULL) |
---|
| 724 | return NULL; |
---|
| 725 | a->magic = ALLOC_MAGIC; |
---|
| 726 | dl_list_add(&alloc_list, &a->list); |
---|
| 727 | a->len = size; |
---|
| 728 | wpa_trace_record(a); |
---|
| 729 | return a + 1; |
---|
| 730 | } |
---|
| 731 | |
---|
| 732 | |
---|
| 733 | void * os_realloc(void *ptr, size_t size) |
---|
| 734 | { |
---|
| 735 | struct os_alloc_trace *a; |
---|
| 736 | size_t copy_len; |
---|
| 737 | void *n; |
---|
| 738 | |
---|
| 739 | if (ptr == NULL) |
---|
| 740 | return os_malloc(size); |
---|
| 741 | |
---|
| 742 | a = (struct os_alloc_trace *) ptr - 1; |
---|
| 743 | if (a->magic != ALLOC_MAGIC) { |
---|
| 744 | wpa_printf(MSG_INFO, "REALLOC[%p]: invalid magic 0x%x%s", |
---|
| 745 | a, a->magic, |
---|
| 746 | a->magic == FREED_MAGIC ? " (already freed)" : ""); |
---|
| 747 | wpa_trace_show("Invalid os_realloc() call"); |
---|
| 748 | abort(); |
---|
| 749 | } |
---|
| 750 | n = os_malloc(size); |
---|
| 751 | if (n == NULL) |
---|
| 752 | return NULL; |
---|
| 753 | copy_len = a->len; |
---|
| 754 | if (copy_len > size) |
---|
| 755 | copy_len = size; |
---|
| 756 | os_memcpy(n, a + 1, copy_len); |
---|
| 757 | os_free(ptr); |
---|
| 758 | return n; |
---|
| 759 | } |
---|
| 760 | |
---|
| 761 | |
---|
| 762 | void os_free(void *ptr) |
---|
| 763 | { |
---|
| 764 | struct os_alloc_trace *a; |
---|
| 765 | |
---|
| 766 | if (ptr == NULL) |
---|
| 767 | return; |
---|
| 768 | a = (struct os_alloc_trace *) ptr - 1; |
---|
| 769 | if (a->magic != ALLOC_MAGIC) { |
---|
| 770 | wpa_printf(MSG_INFO, "FREE[%p]: invalid magic 0x%x%s", |
---|
| 771 | a, a->magic, |
---|
| 772 | a->magic == FREED_MAGIC ? " (already freed)" : ""); |
---|
| 773 | wpa_trace_show("Invalid os_free() call"); |
---|
| 774 | abort(); |
---|
| 775 | } |
---|
| 776 | dl_list_del(&a->list); |
---|
| 777 | a->magic = FREED_MAGIC; |
---|
| 778 | |
---|
| 779 | wpa_trace_check_ref(ptr); |
---|
| 780 | free(a); |
---|
| 781 | } |
---|
| 782 | |
---|
| 783 | |
---|
| 784 | void * os_zalloc(size_t size) |
---|
| 785 | { |
---|
| 786 | void *ptr = os_malloc(size); |
---|
| 787 | if (ptr) |
---|
| 788 | os_memset(ptr, 0, size); |
---|
| 789 | return ptr; |
---|
| 790 | } |
---|
| 791 | |
---|
| 792 | |
---|
| 793 | char * os_strdup(const char *s) |
---|
| 794 | { |
---|
| 795 | size_t len; |
---|
| 796 | char *d; |
---|
| 797 | len = os_strlen(s); |
---|
| 798 | d = os_malloc(len + 1); |
---|
| 799 | if (d == NULL) |
---|
| 800 | return NULL; |
---|
| 801 | os_memcpy(d, s, len); |
---|
| 802 | d[len] = '\0'; |
---|
| 803 | return d; |
---|
| 804 | } |
---|
| 805 | |
---|
| 806 | #endif /* WPA_TRACE */ |
---|
| 807 | |
---|
| 808 | |
---|
| 809 | int os_exec(const char *program, const char *arg, int wait_completion) |
---|
| 810 | { |
---|
| 811 | pid_t pid; |
---|
| 812 | int pid_status; |
---|
| 813 | |
---|
| 814 | pid = fork(); |
---|
| 815 | if (pid < 0) { |
---|
| 816 | perror("fork"); |
---|
| 817 | return -1; |
---|
| 818 | } |
---|
| 819 | |
---|
| 820 | if (pid == 0) { |
---|
| 821 | /* run the external command in the child process */ |
---|
| 822 | const int MAX_ARG = 30; |
---|
| 823 | char *_program, *_arg, *pos; |
---|
| 824 | char *argv[MAX_ARG + 1]; |
---|
| 825 | int i; |
---|
| 826 | |
---|
| 827 | _program = os_strdup(program); |
---|
| 828 | _arg = os_strdup(arg); |
---|
| 829 | |
---|
| 830 | argv[0] = _program; |
---|
| 831 | |
---|
| 832 | i = 1; |
---|
| 833 | pos = _arg; |
---|
| 834 | while (i < MAX_ARG && pos && *pos) { |
---|
| 835 | while (*pos == ' ') |
---|
| 836 | pos++; |
---|
| 837 | if (*pos == '\0') |
---|
| 838 | break; |
---|
| 839 | argv[i++] = pos; |
---|
| 840 | pos = os_strchr(pos, ' '); |
---|
| 841 | if (pos) |
---|
| 842 | *pos++ = '\0'; |
---|
| 843 | } |
---|
| 844 | argv[i] = NULL; |
---|
| 845 | |
---|
| 846 | execv(program, argv); |
---|
| 847 | perror("execv"); |
---|
| 848 | os_free(_program); |
---|
| 849 | os_free(_arg); |
---|
| 850 | exit(0); |
---|
| 851 | return -1; |
---|
| 852 | } |
---|
| 853 | |
---|
| 854 | if (wait_completion) { |
---|
| 855 | /* wait for the child process to complete in the parent */ |
---|
| 856 | waitpid(pid, &pid_status, 0); |
---|
| 857 | } |
---|
| 858 | |
---|
| 859 | return 0; |
---|
| 860 | } |
---|