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[Bug nss/19837] nss_db: No retries for some long lines with a larger buffer

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- Log -----------------------------------------------------------------;h=240ceafed7a00af8571d56db67a6b8854e418106

commit 240ceafed7a00af8571d56db67a6b8854e418106
Author: Florian Weimer <>
Date:   Tue Mar 29 11:27:32 2016 +0200

    nss_db: Propagate ERANGE error if parse_line fails [BZ #19837]

    Reproducer (needs to run as root):

    perl -e \
      'print "large:x:999:" . join(",", map {"user$_"} (1 .. 135))."\n"' \
      >> /etc/group
    cd /var/db
    getent -s db group

    After the fix, the last command should list the "large" group.

    The magic number 135 has been chosen so that the line is shorter than
    1024 bytes, but the pointers required to encode the member array will
    cross the threshold, triggering the bug.

    (cherry picked from commit a6033052d08027f745867e5e346852da1959226c)


Summary of changes:
 ChangeLog           |    6 ++++++
 nss/nss_db/db-XXX.c |    4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

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