#define unsigned_add_overflows(a, b) \
((b) > maximum_unsigned_value_of_type(a) - (a))
+/*
+ * Returns true if the multiplication of "a" and "b" will
+ * overflow. The types of "a" and "b" must match and must be unsigned.
+ * Note that this macro evaluates "a" twice!
+ */
+#define unsigned_mult_overflows(a, b) \
+ ((a) && (b) > maximum_unsigned_value_of_type(a) / (a))
+
#ifdef __GNUC__
#define TYPEOF(x) (__typeof__(x))
#else
#else
#define precompose_str(in,i_nfd2nfc)
#define precompose_argv(c,v)
-#define probe_utf8_pathname_composition(a,b)
+#define probe_utf8_pathname_composition()
#endif
#ifdef MKDIR_WO_TRAILING_SLASH
#else
#define basename gitbasename
extern char *gitbasename(char *);
+#define dirname gitdirname
+extern char *gitdirname(char *);
#endif
#ifndef NO_ICONV
#define PRIuMAX "llu"
#endif
+#ifndef SCNuMAX
+#define SCNuMAX PRIuMAX
+#endif
+
#ifndef PRIu32
#define PRIu32 "u"
#endif
#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
#endif
- #ifndef STRIP_EXTENSION
- #define STRIP_EXTENSION ""
- #endif
-
#ifndef has_dos_drive_prefix
static inline int git_has_dos_drive_prefix(const char *path)
{
#define has_dos_drive_prefix git_has_dos_drive_prefix
#endif
+#ifndef skip_dos_drive_prefix
+static inline int git_skip_dos_drive_prefix(char **path)
+{
+ return 0;
+}
+#define skip_dos_drive_prefix git_skip_dos_drive_prefix
+#endif
+
#ifndef is_dir_sep
static inline int git_is_dir_sep(int c)
{
#endif
#define DEFAULT_PACKED_GIT_LIMIT \
- ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))
+ ((1024L * 1024L) * (size_t)(sizeof(void*) >= 8 ? 8192 : 256))
#ifdef NO_PREAD
#define pread git_pread
#ifdef __GLIBC_PREREQ
#if __GLIBC_PREREQ(2, 1)
#define HAVE_STRCHRNUL
-#define HAVE_MEMPCPY
#endif
#endif
}
#endif
-#ifndef HAVE_MEMPCPY
-#define mempcpy gitmempcpy
-static inline void *gitmempcpy(void *dest, const void *src, size_t n)
-{
- return (char *)memcpy(dest, src, n) + n;
-}
-#endif
-
#ifdef NO_INET_PTON
int inet_pton(int af, const char *src, void *dst);
#endif
typedef void (*try_to_free_t)(size_t);
extern try_to_free_t set_try_to_free_routine(try_to_free_t);
+static inline size_t st_add(size_t a, size_t b)
+{
+ if (unsigned_add_overflows(a, b))
+ die("size_t overflow: %"PRIuMAX" + %"PRIuMAX,
+ (uintmax_t)a, (uintmax_t)b);
+ return a + b;
+}
+#define st_add3(a,b,c) st_add((a),st_add((b),(c)))
+#define st_add4(a,b,c,d) st_add((a),st_add3((b),(c),(d)))
+
+static inline size_t st_mult(size_t a, size_t b)
+{
+ if (unsigned_mult_overflows(a, b))
+ die("size_t overflow: %"PRIuMAX" * %"PRIuMAX,
+ (uintmax_t)a, (uintmax_t)b);
+ return a * b;
+}
+
+static inline size_t st_sub(size_t a, size_t b)
+{
+ if (a < b)
+ die("size_t underflow: %"PRIuMAX" - %"PRIuMAX,
+ (uintmax_t)a, (uintmax_t)b);
+ return a - b;
+}
+
#ifdef HAVE_ALLOCA_H
# include <alloca.h>
# define xalloca(size) (alloca(size))
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 char *xgetcwd(void);
+extern FILE *fopen_for_writing(const char *path);
-#define REALLOC_ARRAY(x, alloc) (x) = xrealloc((x), (alloc) * sizeof(*(x)))
+#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)))
+
+/*
+ * These functions help you allocate structs with flex arrays, and copy
+ * the data directly into the array. For example, if you had:
+ *
+ * struct foo {
+ * int bar;
+ * char name[FLEX_ARRAY];
+ * };
+ *
+ * you can do:
+ *
+ * struct foo *f;
+ * FLEX_ALLOC_MEM(f, name, src, len);
+ *
+ * to allocate a "foo" with the contents of "src" in the "name" field.
+ * The resulting struct is automatically zero'd, and the flex-array field
+ * is NUL-terminated (whether the incoming src buffer was or not).
+ *
+ * The FLEXPTR_* variants operate on structs that don't use flex-arrays,
+ * but do want to store a pointer to some extra data in the same allocated
+ * block. For example, if you have:
+ *
+ * struct foo {
+ * char *name;
+ * int bar;
+ * };
+ *
+ * you can do:
+ *
+ * struct foo *f;
+ * FLEX_ALLOC_STR(f, name, src);
+ *
+ * and "name" will point to a block of memory after the struct, which will be
+ * freed along with the struct (but the pointer can be repointed anywhere).
+ *
+ * The *_STR variants accept a string parameter rather than a ptr/len
+ * combination.
+ *
+ * Note that these macros will evaluate the first parameter multiple
+ * times, and it must be assignable as an lvalue.
+ */
+#define FLEX_ALLOC_MEM(x, flexname, buf, len) do { \
+ (x) = NULL; /* silence -Wuninitialized for offset calculation */ \
+ (x) = xalloc_flex(sizeof(*(x)), (char *)(&((x)->flexname)) - (char *)(x), (buf), (len)); \
+} while (0)
+#define FLEXPTR_ALLOC_MEM(x, ptrname, buf, len) do { \
+ (x) = xalloc_flex(sizeof(*(x)), sizeof(*(x)), (buf), (len)); \
+ (x)->ptrname = (void *)((x)+1); \
+} while(0)
+#define FLEX_ALLOC_STR(x, flexname, str) \
+ FLEX_ALLOC_MEM((x), flexname, (str), strlen(str))
+#define FLEXPTR_ALLOC_STR(x, ptrname, str) \
+ FLEXPTR_ALLOC_MEM((x), ptrname, (str), strlen(str))
+
+static inline void *xalloc_flex(size_t base_len, size_t offset,
+ const void *src, size_t src_len)
+{
+ unsigned char *ret = xcalloc(1, st_add3(base_len, src_len, 1));
+ memcpy(ret + offset, src, src_len);
+ return ret;
+}
static inline char *xstrdup_or_null(const char *str)
{
return (size_t)len;
}
+__attribute__((format (printf, 3, 4)))
+extern int xsnprintf(char *dst, size_t max, const char *fmt, ...);
+
/* in ctype.c, for kwset users */
extern const unsigned char tolower_trans_tbl[256];
char *p;
errno = 0;
+ /* negative values would be accepted by strtoul */
+ if (strchr(s, '-'))
+ return -1;
ul = strtoul(s, &p, base);
if (errno || *p || p == s || (unsigned int) ul != ul)
return -1;
/* Warn on an inaccessible file that ought to be accessible */
void warn_on_inaccessible(const char *path);
-/* Get the passwd entry for the UID of the current process. */
-struct passwd *xgetpwuid_self(void);
-
#ifdef GMTIME_UNRELIABLE_ERRORS
struct tm *git_gmtime(const time_t *);
struct tm *git_gmtime_r(const time_t *, struct tm *);
alias_string = alias_lookup(alias_command);
if (alias_string) {
if (alias_string[0] == '!') {
- const char **alias_argv;
- int argc = *argcp, i;
+ struct child_process child = CHILD_PROCESS_INIT;
commit_pager_choice();
- /* build alias_argv */
- alias_argv = xmalloc(sizeof(*alias_argv) * (argc + 1));
- alias_argv[0] = alias_string + 1;
- for (i = 1; i < argc; ++i)
- alias_argv[i] = (*argv)[i];
- alias_argv[argc] = NULL;
+ child.use_shell = 1;
+ argv_array_push(&child.args, alias_string + 1);
+ argv_array_pushv(&child.args, (*argv) + 1);
- ret = run_command_v_opt(alias_argv, RUN_USING_SHELL);
+ ret = run_command(&child);
if (ret >= 0) /* normal exit */
exit(ret);
{ "index-pack", cmd_index_pack, RUN_SETUP_GENTLY },
{ "init", cmd_init_db, NO_SETUP },
{ "init-db", cmd_init_db, NO_SETUP },
- { "interpret-trailers", cmd_interpret_trailers, RUN_SETUP },
+ { "interpret-trailers", cmd_interpret_trailers, RUN_SETUP_GENTLY },
{ "log", cmd_log, RUN_SETUP },
{ "ls-files", cmd_ls_files, RUN_SETUP },
{ "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
{ "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
{ "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
{ "stripspace", cmd_stripspace },
+ { "submodule--helper", cmd_submodule__helper, RUN_SETUP },
{ "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
{ "tag", cmd_tag, RUN_SETUP },
{ "unpack-file", cmd_unpack_file, RUN_SETUP },
return !!get_builtin(s);
}
+ #ifdef STRIP_EXTENSION
+ static void strip_extension(const char **argv)
+ {
+ size_t len;
+
+ if (strip_suffix(argv[0], STRIP_EXTENSION, &len))
+ argv[0] = xmemdupz(argv[0], len);
+ }
+ #else
+ #define strip_extension(cmd)
+ #endif
+
static void handle_builtin(int argc, const char **argv)
{
- const char *cmd = argv[0];
- int i;
- static const char ext[] = STRIP_EXTENSION;
+ const char *cmd;
struct cmd_struct *builtin;
- if (sizeof(ext) > 1) {
- i = strlen(argv[0]) - strlen(ext);
- if (i > 0 && !strcmp(argv[0] + i, ext)) {
- char *argv0 = xstrdup(argv[0]);
- argv[0] = cmd = argv0;
- argv0[i] = '\0';
- }
- }
+ strip_extension(argv);
+ cmd = argv[0];
/* Turn "git cmd --help" into "git help cmd" */
if (argc > 1 && !strcmp(argv[1], "--help")) {