mirror of
https://git.proxmox.com/git/libgit2
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52 lines
977 B
C
Executable File
52 lines
977 B
C
Executable File
/*
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* Copyright (C) 2009-2012 the libgit2 contributors
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#include <git2/common.h>
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#ifndef GIT_WIN32
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#include "posix.h"
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#include "map.h"
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#include <errno.h>
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int p_mmap(git_map *out, size_t len, int prot, int flags, int fd, git_off_t offset)
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{
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GIT_MMAP_VALIDATE(out, len, prot, flags);
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out->data = NULL;
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out->len = 0;
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if ((prot & GIT_PROT_WRITE) && ((flags & GIT_MAP_TYPE) == GIT_MAP_SHARED)) {
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giterr_set(GITERR_OS, "Trying to map shared-writeable");
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return -1;
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}
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if((out->data = malloc(len))) {
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p_lseek(fd, offset, SEEK_SET);
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p_read(fd, out->data, len);
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}
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if (!out->data || (out->data == MAP_FAILED)) {
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giterr_set(GITERR_OS, "Failed to mmap. Could not write data");
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return -1;
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}
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out->len = len;
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return 0;
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}
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int p_munmap(git_map *map)
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{
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assert(map != NULL);
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free(map->data);
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return 0;
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}
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#endif
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