#include <sys/sysctl.h>
#endif
+#if defined(__CYGWIN__)
+#include "compat/cygwin.h"
+#endif
#if defined(__MINGW32__)
/* pull in Windows compatibility stuff */
#include "compat/mingw.h"
#include <openssl/err.h>
#endif
+#ifdef HAVE_SYSINFO
+# include <sys/sysinfo.h>
+#endif
+
/* On most systems <netdb.h> would have given us this, but
* not on some systems (e.g. z/OS).
*/
#define PRIo32 "o"
#endif
+typedef uintmax_t timestamp_t;
+#define PRItime PRIuMAX
+#define parse_timestamp strtoumax
+#define TIME_MAX UINTMAX_MAX
+
#ifndef PATH_SEP
#define PATH_SEP ':'
#endif
extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params));
extern void set_error_routine(void (*routine)(const char *err, va_list params));
+extern void (*get_error_routine(void))(const char *err, va_list params);
+extern void set_warn_routine(void (*routine)(const char *warn, va_list params));
+extern void (*get_warn_routine(void))(const char *warn, va_list params);
extern void set_die_is_recursing_routine(int (*routine)(void));
-extern void set_error_handle(FILE *);
extern int starts_with(const char *str, const char *prefix);
+extern int istarts_with(const char *str, const char *prefix);
/*
* If the string "str" begins with the string found in "prefix", return 1.
return 0;
}
+/*
+ * If the string "str" is the same as the string in "prefix", then the "arg"
+ * parameter is set to the "def" parameter and 1 is returned.
+ * If the string "str" begins with the string found in "prefix" and then a
+ * "=" sign, then the "arg" parameter is set to "str + strlen(prefix) + 1"
+ * (i.e., to the point in the string right after the prefix and the "=" sign),
+ * and 1 is returned.
+ *
+ * Otherwise, return 0 and leave "arg" untouched.
+ *
+ * When we accept both a "--key" and a "--key=<val>" option, this function
+ * can be used instead of !strcmp(arg, "--key") and then
+ * skip_prefix(arg, "--key=", &arg) to parse such an option.
+ */
+int skip_to_optional_arg_default(const char *str, const char *prefix,
+ const char **arg, const char *def);
+
+static inline int skip_to_optional_arg(const char *str, const char *prefix,
+ const char **arg)
+{
+ return skip_to_optional_arg_default(str, prefix, arg, "");
+}
+
/*
* Like skip_prefix, but promises never to read past "len" bytes of the input
* buffer, and returns the remaining number of bytes in "out" via "outlen".
return strip_suffix(str, suffix, &len);
}
+#define SWAP(a, b) do { \
+ void *_swap_a_ptr = &(a); \
+ void *_swap_b_ptr = &(b); \
+ unsigned char _swap_buffer[sizeof(a)]; \
+ memcpy(_swap_buffer, _swap_a_ptr, sizeof(a)); \
+ memcpy(_swap_a_ptr, _swap_b_ptr, sizeof(a) + \
+ BUILD_ASSERT_OR_ZERO(sizeof(a) == sizeof(b))); \
+ memcpy(_swap_b_ptr, _swap_buffer, sizeof(a)); \
+} while (0)
+
#if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
#ifndef PROT_READ
#endif
#define DEFAULT_PACKED_GIT_LIMIT \
- ((1024L * 1024L) * (size_t)(sizeof(void*) >= 8 ? 8192 : 256))
+ ((1024L * 1024L) * (size_t)(sizeof(void*) >= 8 ? (32 * 1024L * 1024L) : 256))
#ifdef NO_PREAD
#define pread git_pread
extern char *gitmkdtemp(char *);
#endif
-#ifdef NO_MKSTEMPS
-#define mkstemps gitmkstemps
-extern int gitmkstemps(char *, int);
-#endif
-
#ifdef NO_UNSETENV
#define unsetenv gitunsetenv
extern void gitunsetenv(const char *);
#endif
#ifdef FREAD_READS_DIRECTORIES
-#ifdef fopen
-#undef fopen
-#endif
-#define fopen(a,b) git_fopen(a,b)
+# if !defined(SUPPRESS_FOPEN_REDEFINITION)
+# ifdef fopen
+# undef fopen
+# endif
+# define fopen(a,b) git_fopen(a,b)
+# endif
extern FILE *git_fopen(const char*, const char*);
#endif
extern int git_atexit(void (*handler)(void));
#endif
-extern void release_pack_memory(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 int xdup(int fd);
extern FILE *xfopen(const char *path, const char *mode);
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, const unsigned char *sha1);
+extern int xmkstemp(char *temp_filename);
+extern int xmkstemp_mode(char *temp_filename, int mode);
extern char *xgetcwd(void);
extern FILE *fopen_for_writing(const char *path);
+extern FILE *fopen_or_warn(const char *path, const char *mode);
+
+/*
+ * FREE_AND_NULL(ptr) is like free(ptr) followed by ptr = NULL. Note
+ * that ptr is used twice, so don't pass e.g. ptr++.
+ */
+#define FREE_AND_NULL(p) do { free(p); (p) = NULL; } while (0)
#define ALLOC_ARRAY(x, alloc) (x) = xmalloc(st_mult(sizeof(*(x)), (alloc)))
#define REALLOC_ARRAY(x, alloc) (x) = xrealloc((x), st_mult(sizeof(*(x)), (alloc)))
memcpy(dst, src, st_mult(size, n));
}
+#define MOVE_ARRAY(dst, src, n) move_array((dst), (src), (n), sizeof(*(dst)) + \
+ BUILD_ASSERT_OR_ZERO(sizeof(*(dst)) == sizeof(*(src))))
+static inline void move_array(void *dst, const void *src, size_t n, size_t size)
+{
+ if (n)
+ memmove(dst, src, st_mult(size, n));
+}
+
/*
* These functions help you allocate structs with flex arrays, and copy
* the data directly into the array. For example, if you had:
static inline size_t xsize_t(off_t len)
{
- if (len > (size_t) len)
+ size_t size = (size_t) len;
+
+ if (len != (off_t) size)
die("Cannot handle files this big");
- return (size_t)len;
+ return size;
}
__attribute__((format (printf, 3, 4)))
extern int xsnprintf(char *dst, size_t max, const char *fmt, ...);
+#ifndef HOST_NAME_MAX
+#define HOST_NAME_MAX 256
+#endif
+
+extern int xgethostname(char *buf, size_t len);
+
/* in ctype.c, for kwset users */
extern const unsigned char tolower_trans_tbl[256];
return (x & 0x20) == 0;
}
+/*
+ * Like skip_prefix, but compare case-insensitively. Note that the comparison
+ * is done via tolower(), so it is strictly ASCII (no multi-byte characters or
+ * locale-specific conversions).
+ */
+static inline int skip_iprefix(const char *str, const char *prefix,
+ const char **out)
+{
+ do {
+ if (!*prefix) {
+ *out = str;
+ return 1;
+ }
+ } while (tolower(*str++) == tolower(*prefix++));
+ return 0;
+}
+
static inline int strtoul_ui(char const *s, int base, unsigned int *result)
{
unsigned long ul;
#define qsort git_qsort
#endif
+#define QSORT(base, n, compar) sane_qsort((base), (n), sizeof(*(base)), compar)
+static inline void sane_qsort(void *base, size_t nmemb, size_t size,
+ int(*compar)(const void *, const void *))
+{
+ if (nmemb > 1)
+ qsort(base, nmemb, size, compar);
+}
+
+#ifndef HAVE_ISO_QSORT_S
+int git_qsort_s(void *base, size_t nmemb, size_t size,
+ int (*compar)(const void *, const void *, void *), void *ctx);
+#define qsort_s git_qsort_s
+#endif
+
+#define QSORT_S(base, n, compar, ctx) do { \
+ if (qsort_s((base), (n), sizeof(*(base)), compar, ctx)) \
+ BUG("qsort_s() failed"); \
+} while (0)
+
#ifndef REG_STARTEND
#error "Git requires REG_STARTEND support. Compile with NO_REGEX=NeedsStartEnd"
#endif
#define HAVE_VARIADIC_MACROS 1
#endif
+/* usage.c: only to be used for testing BUG() implementation (see test-tool) */
+extern int BUG_exit_code;
+
+#ifdef HAVE_VARIADIC_MACROS
+__attribute__((format (printf, 3, 4))) NORETURN
+void BUG_fl(const char *file, int line, const char *fmt, ...);
+#define BUG(...) BUG_fl(__FILE__, __LINE__, __VA_ARGS__)
+#else
+__attribute__((format (printf, 1, 2))) NORETURN
+void BUG(const char *fmt, ...);
+#endif
+
/*
* Preserves errno, prints a message, but gives no warning for ENOENT.
* Returns 0 on success, which includes trying to unlink an object that does
int access_or_warn(const char *path, int mode, unsigned flag);
int access_or_die(const char *path, int mode, unsigned flag);
-/* Warn on an inaccessible file that ought to be accessible */
-void warn_on_inaccessible(const char *path);
+/* Warn on an inaccessible file if errno indicates this is an error */
+int warn_on_fopen_errors(const char *path);
#ifdef GMTIME_UNRELIABLE_ERRORS
struct tm *git_gmtime(const time_t *);
#define getc_unlocked(fh) getc(fh)
#endif
+/*
+ * Our code often opens a path to an optional file, to work on its
+ * contents when we can successfully open it. We can ignore a failure
+ * to open if such an optional file does not exist, but we do want to
+ * report a failure in opening for other reasons (e.g. we got an I/O
+ * error, or the file is there, but we lack the permission to open).
+ *
+ * Call this function after seeing an error from open() or fopen() to
+ * see if the errno indicates a missing file that we can safely ignore.
+ */
+static inline int is_missing_file_error(int errno_)
+{
+ return (errno_ == ENOENT || errno_ == ENOTDIR);
+}
+
extern int cmd_main(int, const char **);
+/*
+ * You can mark a stack variable with UNLEAK(var) to avoid it being
+ * reported as a leak by tools like LSAN or valgrind. The argument
+ * should generally be the variable itself (not its address and not what
+ * it points to). It's safe to use this on pointers which may already
+ * have been freed, or on pointers which may still be in use.
+ *
+ * Use this _only_ for a variable that leaks by going out of scope at
+ * program exit (so only from cmd_* functions or their direct helpers).
+ * Normal functions, especially those which may be called multiple
+ * times, should actually free their memory. This is only meant as
+ * an annotation, and does nothing in non-leak-checking builds.
+ */
+#ifdef SUPPRESS_ANNOTATED_LEAKS
+extern void unleak_memory(const void *ptr, size_t len);
+#define UNLEAK(var) unleak_memory(&(var), sizeof(var))
+#else
+#define UNLEAK(var) do {} while (0)
+#endif
+
+/*
+ * This include must come after system headers, since it introduces macros that
+ * replace system names.
+ */
+#include "banned.h"
+
#endif