Mercurial > dovecot > original-hg > dovecot-1.2
view src/lib/mmap-util.c @ 6429:65c69a53a7be HEAD
Replaced my Copyright notices. The year range always ends with 2007 now.
My name was replaced with "Dovecot authors". In many cases I didn't really
even own the copyright, so this is more correct.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Sun, 16 Sep 2007 14:34:22 +0300 |
parents | 6a64e64fa3a3 |
children | 7ed926ed7aa4 |
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/* Copyright (c) 2002-2007 Dovecot authors, see the included COPYING file */ #include "lib.h" #include "mmap-util.h" #include <sys/stat.h> void *mmap_file(int fd, size_t *length, int prot) { struct stat st; if (fstat(fd, &st) < 0) return MAP_FAILED; if (st.st_size > SSIZE_T_MAX) { /* too large file to map into memory */ errno = EFBIG; return MAP_FAILED; } *length = (size_t)st.st_size; if (*length == 0) return NULL; i_assert(*length > 0 && *length < SSIZE_T_MAX); return mmap(NULL, *length, prot, MAP_SHARED, fd, 0); } void *mmap_ro_file(int fd, size_t *length) { return mmap_file(fd, length, PROT_READ); } void *mmap_rw_file(int fd, size_t *length) { return mmap_file(fd, length, PROT_READ | PROT_WRITE); } #ifndef HAVE_MADVISE int my_madvise(void *start ATTR_UNUSED, size_t length ATTR_UNUSED, int advice ATTR_UNUSED) { return 0; } #endif size_t mmap_get_page_size(void) { static size_t size = 0; if (size != 0) return size; size = getpagesize(); return size; }