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ipacct soft quota implementation

Changes

quota.stats:

• new database format
  • changed from 3 to 7 fields, now holds Squota, maxT, T0 and warn too
  • Hquota, Squota are 64 bit values now
  • file permissions set to 0644

ipquota/ipquota.h:

• Added WARN warning flag
• Changed struct user_has_s:
  • now holds Squota, maxT, T0 and warn too
  • Hquota and Squota are long long values now
• Removed function prototypes:
  • change_user, change_all
• Added function prototypes:
  • add_user, remove_user, set_quota_user, set_quota_all, modify_quota_user, set_RSquota_user, set_RSquota_all
• Added DB_UMASK database creation umask value

ipquota/database.c:

• init_database()
  • adapted to read new database format
  • uses DB_UMASK to set file permissions of created database file
• close_database()
  • adapted to write new database format
  • uses DB_UMASK to set file permissions of created database file

ipquota/hash.c:

• add_user()
  • puts Squota, maxT, T0 and warn in struct user_hash_s
  • no longer processes data, only stores it
  • expects long long values for Hquota, Squota
• remove_user()
  • new function: removes user from quota database
  • resets user IP access to enabled this is needed because ctrl_access_all only knows about uids in the quota database
• set_quota_user()
  • new function: modifies user quota settings
  • only sets/modifies quota settings, does not process them
  • expects long long values for Hquota, Squota
  • generates warning when setting quota of a non-existant user
• set_quota_all()
  • new function: modifies quota settings for all users
  • only sets/modifies quota settings, does not process them
  • expects long long values for Hquota, Squota
• set_RSquota_user()
  • new function: sets Squota as a percentage of current Hquota
  • only sets/modifies quota settings, does not process them
  • generates warning when setting quota of a non-existant user
• set_RSquota_all()
  • new function: sets Squota as a percentage of current Hquota, for each user
  • only sets/modifies quota settings, does not process them
• modify_quota_user()
  • new function: applies ip consumption to user quota
  • only modifies quota, does not process it
  • ignores attempts to modify quota of non-existant user
• check_quota_all()
  • new function: checks quota of all users
  • only modifies T0, flags and warn
  • triggers warnings at beginning of grace period
• change_user()
  • removed function
• change_all()
  • removed function

ipquota/log.c: no changes

ipquota/version.c: no changes

ipquota/ipadd.c:

• usage()
  • changed to reflect new interface
• main()
  • added commandline handling for extra arguments
  • checks quotas after setting quotas
  • completely rewrote commandline handling and extended user interface
• arg_to_numb()
  • new function: converts a commandline argument to a signed long long value
• arg_to_time()
  • new function: converts a commandline argument to a time_t value
• arg_to_uid()
  • new function: converts a commandline argument to a struct passwd
• process_arguments()
  • new function: processes commandline arguments

ipquota/ipquota.c:

• main()
  • no longer applies access control before reading input
  • checks quotas after processing all input

ipquota/sayip.c:

• main()
  • adapted I/O to new database format
• SLL_to_human()
  • new function, takes a signed long long byte value and converts it to human readable format
• TT_to_human()
  • new function, takes a time_t time value and converts it to human readable format
• arg_to_uid()
  • new function: converts a commandline argument to a struct passwd

ipquota/ipquarn.c

• new file: skeleton source for soft quota warning handling application