diff options
author | Vicent Marti <tanoku@gmail.com> | 2011-07-03 15:33:43 +0400 |
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committer | Vicent Marti <tanoku@gmail.com> | 2011-07-03 15:33:43 +0400 |
commit | 678e9e045becdc5d75f2ce2259ed01c3531ee181 (patch) | |
tree | 67e3f2a6455e5b54edc6927a4df6665d5724789b /src/unix | |
parent | 932d1baf294aaacfd5a99e7758a3c08d8ffc22ab (diff) |
build: Move OS-specific compat to their own folders
Diffstat (limited to 'src/unix')
-rw-r--r-- | src/unix/map.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/unix/map.c b/src/unix/map.c new file mode 100644 index 000000000..1f50bcf2e --- /dev/null +++ b/src/unix/map.c @@ -0,0 +1,64 @@ +#include <git2/common.h> + +#ifndef GIT_WIN32 + +#include "map.h" +#include <sys/mman.h> +#include <errno.h> + +int git__mmap(git_map *out, size_t len, int prot, int flags, int fd, git_off_t offset) +{ + int mprot = 0; + int mflag = 0; + + assert((out != NULL) && (len > 0)); + + if ((out == NULL) || (len == 0)) { + errno = EINVAL; + return git__throw(GIT_ERROR, "Failed to mmap. No map or zero length"); + } + + out->data = NULL; + out->len = 0; + + if (prot & GIT_PROT_WRITE) + mprot = PROT_WRITE; + else if (prot & GIT_PROT_READ) + mprot = PROT_READ; + else { + errno = EINVAL; + return git__throw(GIT_ERROR, "Failed to mmap. Invalid protection parameters"); + } + + if ((flags & GIT_MAP_TYPE) == GIT_MAP_SHARED) + mflag = MAP_SHARED; + else if ((flags & GIT_MAP_TYPE) == GIT_MAP_PRIVATE) + mflag = MAP_PRIVATE; + + if (flags & GIT_MAP_FIXED) { + errno = EINVAL; + return git__throw(GIT_ERROR, "Failed to mmap. FIXED not set"); + } + + out->data = mmap(NULL, len, mprot, mflag, fd, offset); + if (!out->data || out->data == MAP_FAILED) + return git__throw(GIT_EOSERR, "Failed to mmap. Could not write data"); + out->len = len; + + return GIT_SUCCESS; +} + +int git__munmap(git_map *map) +{ + assert(map != NULL); + + if (!map) + return git__throw(GIT_ERROR, "Failed to munmap. Map does not exist"); + + munmap(map->data, map->len); + + return GIT_SUCCESS; +} + +#endif + |