--- /dev/null
+/*
+ * Copyright (c) Artem Bityutskiy, 2007, 2008
+ *
+ * This program 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 program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Imported from mtd-utils by dehrenberg */
+
+#ifndef __MTD_UTILS_COMMON_H__
+#define __MTD_UTILS_COMMON_H__
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <features.h>
+#include <inttypes.h>
+
+#ifndef PROGRAM_NAME
+# error "You must define PROGRAM_NAME before including this header"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef MIN /* some C lib headers define this for us */
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#endif
+#ifndef MAX
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
+#define min(a, b) MIN(a, b) /* glue for linux kernel source */
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
+#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
+#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
+
+#define min_t(t,x,y) ({ \
+ typeof((x)) _x = (x); \
+ typeof((y)) _y = (y); \
+ (_x < _y) ? _x : _y; \
+})
+
+#define max_t(t,x,y) ({ \
+ typeof((x)) _x = (x); \
+ typeof((y)) _y = (y); \
+ (_x > _y) ? _x : _y; \
+})
+
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 0
+#endif
+
+/* define a print format specifier for off_t */
+#ifdef __USE_FILE_OFFSET64
+#define PRIxoff_t PRIx64
+#define PRIdoff_t PRId64
+#else
+#define PRIxoff_t "l"PRIx32
+#define PRIdoff_t "l"PRId32
+#endif
+
+/* Verbose messages */
+#define bareverbose(verbose, fmt, ...) do { \
+ if (verbose) \
+ printf(fmt, ##__VA_ARGS__); \
+} while(0)
+#define verbose(verbose, fmt, ...) \
+ bareverbose(verbose, "%s: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__)
+
+/* Normal messages */
+#define normsg_cont(fmt, ...) do { \
+ printf("%s: " fmt, PROGRAM_NAME, ##__VA_ARGS__); \
+} while(0)
+#define normsg(fmt, ...) do { \
+ normsg_cont(fmt "\n", ##__VA_ARGS__); \
+} while(0)
+
+/* Error messages */
+#define errmsg(fmt, ...) ({ \
+ fprintf(stderr, "%s: error!: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__); \
+ -1; \
+})
+#define errmsg_die(fmt, ...) do { \
+ exit(errmsg(fmt, ##__VA_ARGS__)); \
+} while(0)
+
+/* System error messages */
+#define sys_errmsg(fmt, ...) ({ \
+ int _err = errno; \
+ errmsg(fmt, ##__VA_ARGS__); \
+ fprintf(stderr, "%*serror %d (%s)\n", (int)sizeof(PROGRAM_NAME) + 1,\
+ "", _err, strerror(_err)); \
+ -1; \
+})
+#define sys_errmsg_die(fmt, ...) do { \
+ exit(sys_errmsg(fmt, ##__VA_ARGS__)); \
+} while(0)
+
+/* Warnings */
+#define warnmsg(fmt, ...) do { \
+ fprintf(stderr, "%s: warning!: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__); \
+} while(0)
+
+#if defined(__UCLIBC__)
+/* uClibc versions before 0.9.34 don't have rpmatch() */
+#if __UCLIBC_MAJOR__ == 0 && \
+ (__UCLIBC_MINOR__ < 9 || \
+ (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ < 34))
+#undef rpmatch
+#define rpmatch __rpmatch
+static inline int __rpmatch(const char *resp)
+{
+ return (resp[0] == 'y' || resp[0] == 'Y') ? 1 :
+ (resp[0] == 'n' || resp[0] == 'N') ? 0 : -1;
+}
+#endif
+#endif
+
+/**
+ * prompt the user for confirmation
+ */
+static inline bool prompt(const char *msg, bool def)
+{
+ char *line = NULL;
+ size_t len;
+ bool ret = def;
+
+ do {
+ normsg_cont("%s (%c/%c) ", msg, def ? 'Y' : 'y', def ? 'n' : 'N');
+ fflush(stdout);
+
+ while (getline(&line, &len, stdin) == -1) {
+ printf("failed to read prompt; assuming '%s'\n",
+ def ? "yes" : "no");
+ break;
+ }
+
+ if (strcmp("\n", line) != 0) {
+ switch (rpmatch(line)) {
+ case 0: ret = false; break;
+ case 1: ret = true; break;
+ case -1:
+ puts("unknown response; please try again");
+ continue;
+ }
+ }
+ break;
+ } while (1);
+
+ free(line);
+
+ return ret;
+}
+
+static inline int is_power_of_2(unsigned long long n)
+{
+ return (n != 0 && ((n & (n - 1)) == 0));
+}
+
+/**
+ * simple_strtoX - convert a hex/dec/oct string into a number
+ * @snum: buffer to convert
+ * @error: set to 1 when buffer isn't fully consumed
+ *
+ * These functions are similar to the standard strtoX() functions, but they are
+ * a little bit easier to use if you want to convert full string of digits into
+ * the binary form. The typical usage:
+ *
+ * int error = 0;
+ * unsigned long num;
+ *
+ * num = simple_strtoul(str, &error);
+ * if (error || ... if needed, your check that num is not out of range ...)
+ * error_happened();
+ */
+#define simple_strtoX(func, type) \
+static inline type simple_##func(const char *snum, int *error) \
+{ \
+ char *endptr; \
+ type ret = func(snum, &endptr, 0); \
+ \
+ if (error && (!*snum || *endptr)) { \
+ errmsg("%s: unable to parse the number '%s'", #func, snum); \
+ *error = 1; \
+ } \
+ \
+ return ret; \
+}
+simple_strtoX(strtol, long int)
+simple_strtoX(strtoll, long long int)
+simple_strtoX(strtoul, unsigned long int)
+simple_strtoX(strtoull, unsigned long long int)
+
+/* Simple version-printing for utils */
+#define common_print_version() \
+do { \
+ printf("%s %s\n", PROGRAM_NAME, VERSION); \
+} while (0)
+
+#include "libmtd_xalloc.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !__MTD_UTILS_COMMON_H__ */
projects / fio.git / blobdiff