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Diffstat (limited to '')
-rw-r--r-- | tests/helpers/test_sysinfo.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/tests/helpers/test_sysinfo.c b/tests/helpers/test_sysinfo.c new file mode 100644 index 0000000..e13931d --- /dev/null +++ b/tests/helpers/test_sysinfo.c @@ -0,0 +1,138 @@ +/* + * Copyright (C) 2007 Karel Zak <kzak@redhat.com> + * + * This file is part of util-linux. + * + * This file is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <limits.h> +#include <stdint.h> +#include <inttypes.h> + +typedef struct { + const char *name; + int (*fnc)(void); +} mntHlpfnc; + +static int hlp_wordsize(void) +{ + printf("%zu\n", CHAR_BIT * sizeof(void*)); + return 0; +} + +static int hlp_endianness(void) +{ +#if !defined(WORDS_BIGENDIAN) + printf("LE\n"); +#else + printf("BE\n"); +#endif + return 0; +} + + +static int hlp_pagesize(void) +{ + printf("%d\n", getpagesize()); + return 0; +} + +static int hlp_int_max(void) +{ + printf("%d\n", INT_MAX); + return 0; +} + +static int hlp_uint_max(void) +{ + printf("%u\n", UINT_MAX); + return 0; +} + +static int hlp_long_max(void) +{ + printf("%ld\n", LONG_MAX); + return 0; +} + +static int hlp_ulong_max(void) +{ + printf("%lu\n", ULONG_MAX); + return 0; +} + +static int hlp_u64_max(void) +{ + printf("%" PRIu64 "\n", UINT64_MAX); + return 0; +} + +static int hlp_ulong_max32(void) +{ +#if __WORDSIZE == 64 + printf("%lu\n", ULONG_MAX >> 32); +#else + printf("%lu\n", ULONG_MAX); +#endif + return 0; +} + +static mntHlpfnc hlps[] = +{ + { "WORDSIZE", hlp_wordsize }, + { "pagesize", hlp_pagesize }, + { "INT_MAX", hlp_int_max }, + { "UINT_MAX", hlp_uint_max }, + { "LONG_MAX", hlp_long_max }, + { "ULONG_MAX", hlp_ulong_max }, + { "ULONG_MAX32",hlp_ulong_max32 }, + { "UINT64_MAX", hlp_u64_max }, + { "byte-order", hlp_endianness }, + { NULL, NULL } +}; + +int main(int argc, char **argv) +{ + int re = 0; + mntHlpfnc *fn; + + if (argc == 1) { + for (fn = hlps; fn->name; fn++) { + printf("%15s: ", fn->name); + re += fn->fnc(); + } + } else { + int i; + + if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0) { + printf("%s <option>\n", argv[0]); + fputs("options:\n", stdout); + for (fn = hlps; fn->name; fn++) + printf("\t%s\n", fn->name); + exit(EXIT_SUCCESS); + } + + for (i=1; i < argc; i++) { + for (fn = hlps; fn->name; fn++) { + if (strcmp(fn->name, argv[i]) == 0) + re += fn->fnc(); + } + } + } + + exit(re ? EXIT_FAILURE : EXIT_SUCCESS); +} + |