sane-pnm(5)

1sane-pnm(5)              SANE Scanner Access Now Easy              sane-pnm(5)
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NAME

6       sane-pnm - SANE PNM image reader pseudo-backend
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DESCRIPTION

9       The  sane-pnm library implements a SANE (Scanner Access Now Easy) back‐
10       end that provides access to PNM (Portable aNyMap  files,  which  covers
11       PBM bitmap files, PGM grayscale files, and PPM pixmap files).  The pur‐
12       pose of this backend is primarly to aid in debugging of SANE frontends.
13       It also serves as an illustrative example of a minimal SANE backend.
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DEVICE NAMES

16       This backend provides two devices called 0 and 1.
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CONFIGURATION

19       No configuration required.
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FILES

22       /usr/lib*/sane/libsane-pnm.a
23              The static library implementing this backend.
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25       /usr/lib*/sane/libsane-pnm.so
26              The shared library implementing this backend (present on systems
27              that support dynamic loading).
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ENVIRONMENT

30       SANE_DEBUG_PNM
31              If the library was compiled with  debug  support  enabled,  this
32              environment  variable controls the debug level for this backend.
33              E.g., a value of 128 requests all debug output  to  be  printed.
34              Smaller levels reduce verbosity.
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BUGS

37       If  the  pnm  backend  is installed and saned is used to allow users on
38       remote computers to scan on the local machine, pnm files can be read by
39       the remote user. This is limited to the files saned can access (usually
40       it's running as user "sane"). All pnm files can be read if  saned  runs
41       as  root which isn't recommended anyway. The pnm backend is disabled by
42       default. If you want to use it, enable it with configure (see configure
43       --help for details). Be sure that only trusted users can access the pnm
44       backend over saned.
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AUTHOR

47       Andreas Beck, Gordon Matzigkeit, and David Mosberger
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