This file is indexed.

/usr/include/mmap.h is in libowfat-dev 0.29-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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/* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
#ifndef MMAP_H
#define MMAP_H

#include <stddef.h>

#ifdef __cplusplus
extern "C" {
#endif

/* open file for reading, mmap whole file, close file, write length of
 * map in filesize and return pointer to map. */
char* mmap_read(const char *filename,size_t* filesize);

/* open file for writing, mmap whole file privately (copy on write),
 * close file, write length of map in filesize and return pointer to
 * map. */
char* mmap_private(const char *filename,size_t* filesize);

/* open file for writing, mmap whole file shared, close file, write
 * length of map in filesize and return pointer to map. */
char* mmap_shared(const char *filename,size_t* filesize);

/* unmap a mapped region */
int mmap_unmap(char* mapped,size_t maplen);

#ifdef __cplusplus
}
#endif

#endif