Don't allow data_directory to be set in postgresql.auto.conf by ALTER SYSTEM.
data_directory could be set both in postgresql.conf and postgresql.auto.conf so far.
This could cause some problematic situations like circular definition. To avoid such
situations, this commit forbids a user to set data_directory in postgresql.auto.conf.
Backpatch this to 9.4 where ALTER SYSTEM command was introduced.
Amit Kapila, reviewed by Abhijit Menon-Sen, with minor adjustments by me.
Branch
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REL9_4_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/fc5cf383d9ae894e3c9e94701ce5dc468d334433
Modified Files
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doc/src/sgml/ref/alter_system.sgml | 10 ++++++++++
src/backend/utils/misc/guc.c | 21 +++++++++++++++------
src/include/utils/guc.h | 1 +
3 files changed, 26 insertions(+), 6 deletions(-)
