#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#define bitsizeof(x) (CHAR_BIT * sizeof(x))
+#define maximum_signed_value_of_type(a) \
+ (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a)))
+
+/*
+ * Signed integer overflow is undefined in C, so here's a helper macro
+ * to detect if the sum of two integers will overflow.
+ *
+ * Requires: a >= 0, typeof(a) equals typeof(b)
+ */
+#define signed_add_overflows(a, b) \
+ ((b) > maximum_signed_value_of_type(a) - (a))
+
#ifdef __GNUC__
#define TYPEOF(x) (__typeof__(x))
#else
#include <assert.h>
#include <regex.h>
#include <utime.h>
+#include <syslog.h>
+#ifndef NO_SYS_POLL_H
+#include <sys/poll.h>
+#else
+#include <poll.h>
+#endif
#ifndef __MINGW32__
#include <sys/wait.h>
-#include <sys/poll.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <pwd.h>
+#ifndef NO_INTTYPES_H
#include <inttypes.h>
+#else
+#include <stdint.h>
+#endif
#if defined(__CYGWIN__)
#undef _XOPEN_SOURCE
#include <grp.h>
#define PRIx32 "x"
#endif
+#ifndef PRIo32
+#define PRIo32 "o"
+#endif
+
#ifndef PATH_SEP
#define PATH_SEP ':'
#endif
#include "compat/bswap.h"
/* General helper functions */
+extern void vreportf(const char *prefix, const char *err, va_list params);
extern NORETURN void usage(const char *err);
extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
#define PROT_READ 1
#define PROT_WRITE 2
#define MAP_PRIVATE 1
-#define MAP_FAILED ((void*)-1)
#endif
#define mmap git_mmap
#endif /* NO_MMAP */
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *)-1)
+#endif
+
#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
#define on_disk_bytes(st) ((st).st_size)
#else
extern uintmax_t gitstrtoumax(const char *, char **, int);
#endif
+#ifdef NO_STRTOK_R
+#define strtok_r gitstrtok_r
+extern char *gitstrtok_r(char *s, const char *delim, char **save_ptr);
+#endif
+
#ifdef NO_HSTRERROR
#define hstrerror githstrerror
extern const char *githstrerror(int herror);
}
#endif
+#ifdef NO_INET_PTON
+int inet_pton(int af, const char *src, void *dst);
+#endif
+
+#ifdef NO_INET_NTOP
+const char *inet_ntop(int af, const void *src, char *dst, size_t size);
+#endif
+
extern void release_pack_memory(size_t, int);
-extern void set_try_to_free_routine(void (*routine)(size_t));
+typedef void (*try_to_free_t)(size_t);
+extern try_to_free_t set_try_to_free_routine(try_to_free_t);
extern char *xstrdup(const char *str);
extern void *xmalloc(size_t size);
extern int xdup(int fd);
extern FILE *xfdopen(int fd, const char *mode);
extern int xmkstemp(char *template);
+extern int xmkstemp_mode(char *template, int mode);
extern int odb_mkstemp(char *template, size_t limit, const char *pattern);
extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1);
static inline size_t xsize_t(off_t len)
{
+ if (len > (size_t) len)
+ die("Cannot handle files this big");
return (size_t)len;
}