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libbb: introduse and use signal_[no_]SA_RESTART_empty_mask and sigaction_set

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signal_SA_RESTART_empty_mask                           -      65     +65
signal_no_SA_RESTART_empty_mask                        -      54     +54
dd_main                                             1325    1369     +44
sigaction_set                                          -      19     +19
dname_enc                                            373     377      +4
UNSPEC_print                                          64      66      +2
setsignal                                            296     294      -2
bb_signals_recursive                                  95      92      -3
bb_askpass                                           367     361      -6
inetd_main                                          1810    1797     -13
rx_main                                              912     883     -29
sigdelset                                             32       -     -32
__sigdelset                                           32       -     -32
__GI_sigdelset                                        32       -     -32
sighup_handler                                        84      37     -47
arping_main                                         1844    1797     -47
fsck_main                                           1869    1807     -62
run_list                                            1917    1844     -73
vlock_main                                           492     409     -83
progressmeter                                        883     798     -85
handle_incoming_and_exit                            2737    2651     -86
------------------------------------------------------------------------------
(add/remove: 3/3 grow/shrink: 3/12 up/down: 188/-632)        Total: -444 bytes
This commit is contained in:
Denis Vlasenko
2008-03-12 23:19:35 +00:00
parent 4cf1d08fc2
commit 8e2cfec1cd
14 changed files with 60 additions and 83 deletions
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7
include/libbb.h
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@ -275,6 +275,7 @@ char *xrealloc_getcwd_or_warn(char *cwd);
char *xmalloc_follow_symlinks(const char *path);
enum {
/* bb_signals(BB_SIGS_FATAL, handler) catches all signals which
* otherwise would kill us, except for those resulting from bugs:
@ -306,6 +307,12 @@ void bb_signals(int sigs, void (*f)(int));
* and in a way that while signal handler is run, no other signals
* will be blocked: */
void bb_signals_recursive(int sigs, void (*f)(int));
/* syscalls like read() will be interrupted with EINTR: */
void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int));
/* syscalls like read() won't be interrupted (though select/poll will be): */
void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int));
/* Will do sigaction(signum, act, NULL): */
int sigaction_set(int signum, const struct sigaction *act);
void sig_block(int);
void sig_unblock(int);
/* UNUSED: void sig_blocknone(void); */