system(3) should ignore SIGINT and SIGQUIT until the shell exits.
This got broken when system.c was converted from signal(3) to sigaction(2).
Also add SIGINT and SIGQUIT to the set of blocked signals

system(3) should ignore SIGINT and SIGQUIT until the shell exits.
This got broken when system.c was converted from signal(3) to sigaction(2).
Also add SIGINT and SIGQUIT to the set of blocked signals and unblock
them in the parent after the signal handlers are installed.
Based on a diff from Leon Fischer. OK deraadt@

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environ and __progname are not declared in a public header; declare them
in libc's hidden/stdlib.h instead of in each .c file that needs one

ok deraadt@ gsoares@ mpi@

Loop the waitpid() on EINTR, and save and restore the disposition of
SIGINT and SIGQUIT with sigaction() instead of signal() so that all bits
are preserved.

ok deraadt@ millert@

Remove cast of int* to int*

Wrap <stdlib.h> so that calls go direct and the symbols not in the
C standard are all weak.
Apply __{BEGIN,END}_HIDDEN_DECLS to gdtoa{,imp}.h, hiding the
arch-specific __strtorx, __ULtox_D2A, __strto

Wrap <stdlib.h> so that calls go direct and the symbols not in the
C standard are all weak.
Apply __{BEGIN,END}_HIDDEN_DECLS to gdtoa{,imp}.h, hiding the
arch-specific __strtorx, __ULtox_D2A, __strtorQ, __ULtoQ_D2A symbols.

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zap remaining rcsid.

Kill old files that are no longer compiled.

okay theo

ansi + de-register

ok otto deraadt

Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999. Proofed by myself and Theo.

pid_t cleanup

Replace the deprecated BSD sigsetmask/sigblock/sigpause functions with their POSIX counterparts.

Remove dead code
Remove unused variables
Silence some warnings
lint(1) is your friend

Fix RCS ids
Make sure everything uses {SYS,}LIBC_SCCS properly

initial import of NetBSD tree