thodg/libgit2

diff --git a/src/common.h b/src/common.h
index 821ee88..287df60 100644
--- a/src/common.h
+++ b/src/common.h
@@ -49,7 +49,6 @@ typedef SSIZE_T ssize_t;
 #include "git2/common.h"
 #include "util.h"
 #include "thread-utils.h"
-#include "errors.h"
 #include "bswap.h"
 
 #define GIT_PATH_MAX 4096
diff --git a/src/errors.c b/src/errors.c
index ac73402..df8b822 100644
--- a/src/errors.c
+++ b/src/errors.c
@@ -1,34 +1,6 @@
 #include "common.h"
 #include "thread-utils.h" /* for GIT_TLS */
 
-#if defined(GIT_TLS)
-/* compile-time constant initialization required */
-GIT_TLS int git_errno = 0;
-
-#elif defined(GIT_HAS_PTHREAD)
-
-static pthread_key_t errno_key;
-
-static void init_errno(void) __attribute__((constructor));
-static void init_errno(void)
-{
-	pthread_key_create(&errno_key, free);
-}
-
-int *git__errno_storage(void)
-{
-	int *e = pthread_getspecific(errno_key);
-	if (!e) {
-#undef calloc
-		e = calloc(1, sizeof(*e));
-#define calloc(a,b) GIT__FORBID_MALLOC
-		pthread_setspecific(errno_key, e);
-	}
-	return e;
-}
-
-#endif
-
 static struct {
 	int num;
 	const char *str;
diff --git a/src/errors.h b/src/errors.h
deleted file mode 100644
index d22a03b..0000000
--- a/src/errors.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef INCLUDE_errors_h__
-#define INCLUDE_errors_h__
-
-#include "git2/errors.h"
-
-/* convenience functions */
-GIT_INLINE(int) git_int_error(int code)
-{
-	git_errno = code;
-	return code;
-}
-
-GIT_INLINE(int) git_os_error(void)
-{
-	return git_int_error(GIT_EOSERR);
-}
-
-GIT_INLINE(void) *git_ptr_error(int code)
-{
-	git_errno = code;
-	return NULL;
-}
-
-#endif
diff --git a/src/fileops.c b/src/fileops.c
index a25796a..5d7e929 100644
--- a/src/fileops.c
+++ b/src/fileops.c
@@ -4,13 +4,13 @@
 int gitfo_open(const char *path, int flags)
 {
 	int fd = open(path, flags | O_BINARY);
-	return fd >= 0 ? fd : git_os_error();
+	return fd >= 0 ? fd : GIT_EOSERR;
 }
 
 int gitfo_creat(const char *path, int mode)
 {
 	int fd = open(path, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, mode);
-	return fd >= 0 ? fd : git_os_error();
+	return fd >= 0 ? fd : GIT_EOSERR;
 }
 
 int gitfo_read(git_file fd, void *buf, size_t cnt)
@@ -21,11 +21,11 @@ int gitfo_read(git_file fd, void *buf, size_t cnt)
 		if (r < 0) {
 			if (errno == EINTR || errno == EAGAIN)
 				continue;
-			return git_os_error();
+			return GIT_EOSERR;
 		}
 		if (!r) {
 			errno = EPIPE;
-			return git_os_error();
+			return GIT_EOSERR;
 		}
 		cnt -= r;
 		b += r;
@@ -41,11 +41,11 @@ int gitfo_write(git_file fd, void *buf, size_t cnt)
 		if (r < 0) {
 			if (errno == EINTR || errno == EAGAIN)
 				continue;
-			return git_os_error();
+			return GIT_EOSERR;
 		}
 		if (!r) {
 			errno = EPIPE;
-			return git_os_error();
+			return GIT_EOSERR;
 		}
 		cnt -= r;
 		b += r;
@@ -92,7 +92,7 @@ off_t gitfo_size(git_file fd)
 {
 	struct stat sb;
 	if (gitfo_fstat(fd, &sb))
-		return git_os_error();
+		return GIT_EOSERR;
 	return sb.st_size;
 }
 
@@ -151,13 +151,13 @@ int gitfo_move_file(char *from, char *to)
 	if (!rename(from, to))
 		return GIT_SUCCESS;
 
-	return git_os_error();
+	return GIT_EOSERR;
 }
 
 int gitfo_map_ro(git_map *out, git_file fd, off_t begin, size_t len)
 {
 	if (git__mmap(out, len, GIT_PROT_READ, GIT_MAP_SHARED, fd, begin) < GIT_SUCCESS)
-		return git_os_error();
+		return GIT_EOSERR;
 	return GIT_SUCCESS;
 }
 
@@ -275,7 +275,7 @@ int gitfo_dirent(
 
 	dir = opendir(path);
 	if (!dir)
-		return git_os_error();
+		return GIT_EOSERR;
 
 	while ((de = readdir(dir)) != NULL) {
 		size_t de_len;
diff --git a/src/git2/errors.h b/src/git2/errors.h
index 98bce48..627e67c 100644
--- a/src/git2/errors.h
+++ b/src/git2/errors.h
@@ -33,16 +33,6 @@
  */
 GIT_BEGIN_DECL
 
-/** The git errno. */
-#if defined(GIT_TLS)
-GIT_EXTERN_TLS(int) git_errno;
-
-#elif defined(GIT_HAS_PTHREAD)
-# define git_errno (*git__errno_storage())
-GIT_EXTERN(int *) git__errno_storage(void);
-
-#endif
-
 /**
  * strerror() for the Git library
  * @param num The error code to explain
diff --git a/src/unix/map.c b/src/unix/map.c
index a41bae0..3008008 100644
--- a/src/unix/map.c
+++ b/src/unix/map.c
@@ -40,7 +40,7 @@ int git__mmap(git_map *out, size_t len, int prot, int flags, int fd, off_t offse
 
 	out->data = mmap(NULL, len, mprot, mflag, fd, offset);
 	if (!out->data || out->data == MAP_FAILED)
-		return git_os_error();
+		return GIT_EOSERR;
 	out->len = len;
 
 	return GIT_SUCCESS;
diff --git a/src/util.c b/src/util.c
index debf526..a3b62ef 100644
--- a/src/util.c
+++ b/src/util.c
@@ -3,30 +3,6 @@
 #include <stdarg.h>
 #include <stdio.h>
 
-void *git__malloc(size_t n)
-{
-	void *r = malloc(n);
-	if (!r)
-		return git_ptr_error(GIT_ENOMEM);
-	return r;
-}
-
-void *git__calloc(size_t a, size_t b)
-{
-	void *r = calloc(a, b);
-	if (!r)
-		return git_ptr_error(GIT_ENOMEM);
-	return r;
-}
-
-char *git__strdup(const char *s)
-{
-	char *r = strdup(s);
-	if (!r)
-		return git_ptr_error(GIT_ENOMEM);
-	return r;
-}
-
 int git__fmt(char *buf, size_t buf_sz, const char *fmt, ...)
 {
 	va_list va;
diff --git a/src/util.h b/src/util.h
index 05f5a34..5204185 100644
--- a/src/util.h
+++ b/src/util.h
@@ -3,28 +3,16 @@
 
 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
 
-GIT_EXTERN(void *) git__malloc(size_t);
-GIT_EXTERN(void *) git__calloc(size_t, size_t);
-GIT_EXTERN(char *) git__strdup(const char *);
-
-#ifndef GIT__NO_HIDE_MALLOC
-# define GIT__FORBID_MALLOC do_not_use_malloc_directly
-
-# ifdef malloc
-#  undef malloc
-# endif
-# define malloc(a)          GIT__FORBID_MALLOC
-
-# ifdef calloc
-#  undef calloc
-# endif
-# define calloc(a,b)        GIT__FORBID_MALLOC
-
-# ifdef strdup
-#  undef strdup
-# endif
-# define strdup(a)          GIT__FORBID_MALLOC
-#endif
+/* 
+ * Don't wrap malloc/calloc.
+ * Use the default versions in glibc, and make
+ * sure that any methods that allocate memory
+ * return a GIT_ENOMEM error when allocation
+ * fails.
+ */
+#define git__malloc malloc
+#define git__calloc calloc
+#define git__strdup strdup
 
 GIT_EXTERN(int) git__fmt(char *, size_t, const char *, ...)
 	GIT_FORMAT_PRINTF(3, 4);
diff --git a/tests/t0001-errno.c b/tests/t0001-errno.c
deleted file mode 100644
index acb12d3..0000000
--- a/tests/t0001-errno.c
+++ /dev/null
@@ -1,12 +0,0 @@
-#include "test_lib.h"
-#include "errors.h"
-
-BEGIN_TEST(errno_zero_on_init)
-	must_be_true(git_errno == 0);
-END_TEST
-
-BEGIN_TEST(set_ENOTOID)
-	must_be_true(GIT_ENOTOID != 0);
-	git_errno = GIT_ENOTOID;
-	must_be_true(git_errno == GIT_ENOTOID);
-END_TEST