mlocate.db(5)

1mlocate.db(5)                 File Formats Manual                mlocate.db(5)
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NAME

6       mlocate.db - a mlocate database
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DESCRIPTION

10       A  mlocate database starts with a file header: 8 bytes for a magic num‐
11       ber ("\0mlocate" like a C literal), 4 bytes for the configuration block
12       size  in big endian, 1 byte for file format version (0), 1 byte for the
13       “require visibility” flag (0 or 1), 2 bytes padding, and  a  NUL-termi‐
14       nated path name of the root of the database.
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16       The  header  is  followed  by a configuration block, included to ensure
17       databases are not reused if some  configuration  changes  could  affect
18       their contents.  The size of the configuration block in bytes is stored
19       in the file header.  The configuration block is a sequence of  variable
20       assignments,  ordered  by variable name.  Each variable assignment con‐
21       sists of a NUL-terminated variable name and an ordered list of NUL-ter‐
22       minated  values.   The value list is terminated by one more NUL charac‐
23       ter.  The ordering used is defined by the strcmp () function.
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25       Currently defined variables are:
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27       prune_bind_mounts
28              A single entry, the  value  of  PRUNE_BIND_MOUNTS;  one  of  the
29              strings 0 or 1.
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32       prunefs
33              The value of PRUNEFS, each entry is converted to uppercase.
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36       prunepaths
37              The value of PRUNEPATHS.
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40       The  rest  of  the  file until EOF describes directories and their con‐
41       tents.  Each directory starts with a header: 8 bytes for directory time
42       (seconds)  in  big  endian, 4 bytes for directory time (nanoseconds) in
43       big endian (0 if unknown, less than 1,000,000,000),  4  bytes  padding,
44       and  a  NUL-terminated  path name of the the directory.  Directory con‐
45       tents, a sequence of file entries sorted by name, follow.
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47       Directory time is the maximum of st_ctime and st_mtime  of  the  direc‐
48       tory.   updatedb(8) uses the original data if the directory time in the
49       database and in the file system match exactly.  Directory time equal to
50       0  always causes rescanning of the directory: this is necessary to han‐
51       dle directories which were being updated while building the database.
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53       Each file entry starts with a single byte, marking its type:
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55       0      A non-directory file.  Followed by a  NUL-terminated  file  (not
56              path) name.
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59       1      A  subdirectory.   Followed  by a NUL-terminated file (not path)
60              name.
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63       2      Marks the end of the current directory.
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66       locate(1) only reports file entries, directory names are  not  reported
67       because  they  are reported as an entry in their parent directory.  The
68       only exception is the root directory of the database, which  is  stored
69       in the file header.
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AUTHOR

73       Miloslav Trmac <mitr@redhat.com>
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NAME

DESCRIPTION

AUTHOR

SEE ALSO