GCC_NO_FORMAT_TRUNCATION -Wno-format-truncation (GCC 7/8)
GCC_NO_STRINGOP_TRUNCATION -Wno-stringop-truncation (GCC 8)
GCC_NO_STRINGOP_OVERFLOW -Wno-stringop-overflow (GCC 8)
GCC_NO_CAST_FUNCTION_TYPE -Wno-cast-function-type (GCC 8)
use these to turn off warnings for most GCC-8 complaints. many
of these are false positives, most of the real bugs are already
commited, or are yet to come.
we plan to introduce versions of (some?) of these that use the
"-Wno-error=" form, which still displays the warnings but does
not make it an error, and all of the above will be re-considered
as either being "fix me" (warning still displayed) or "warning
is wrong."
from usr.sbin/mopd/common/pf.c, where only the ad clause is removed,
because it has a shared UCB copyright) on Mats O Jansson's files.
thorpej OK'd usr.sbin/rpc.yppasswdd/yppasswdd_mkpw.c, where he shares
copyright.
Reason: In routine make_passwd() in yppasswdd_mkpw.c, fgets() is used
to read master.passwd line-by-line. The lines are then parsed using
pw_scan(), without removing the trailing \n from the line. pw_scan()
fills in the shell name into pw.pw_shell, including the trailing \n.
Subsequently, rpc.yppasswdd calls pw_copy(), which copies master.passwd
to ptmp, updating the entry for pw.pw_name. pw_copy() terminates the
updated entry with an additonal \n, so that there is now an empty line
in ptmp.
Finally, rpc.yppasswdd calls pw_mkdb(3), which exec's /usr/sbin/pwd_mkdb
to install ptmp to master.passwd (and to create the pwd.db and spwd.db
data bases). pwd_mkdb chokes on the empty ptmp line.
Fix: remove the trailing \n from the buffer fgets() returns. As a side
effect, this gets us some additional error checking.
Reviewed by <tron>.
getpwnam() to get the user's passwd entry but read it from the passwd file
yppasswdd will later update. This allows a NetBSD machine to be master NIS
server without requiring the NIS accounts to exist (via /etc/master.passwd,
nis or other ways) on the local machine.
mrg