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Ensure vars updated by signal handlers are volatile and atomic. Fixes #2245

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This commit is contained in:
dmiller 2026-07-17 21:56:23 +00:00
parent 3860d258c4
commit 32d1b967fc
4 changed files with 5 additions and 3 deletions
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2
ncat/ncat_listen.c
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@ -146,7 +146,7 @@ static char *chat_filter(char *buf, size_t size, int fd, int *nwritten);
(synchronously) only in the main program. get_conn_count loops while conn_dec
is being modified. */
static unsigned int conn_inc = 0;
static volatile unsigned int conn_dec = 0;
static volatile sig_atomic_t conn_dec = 0;
static volatile sig_atomic_t conn_dec_changed;
static void decrease_conn_count(void)

2
ncat/ncat_posix.c
View file

@ -66,7 +66,7 @@
char **cmdline_split(const char *cmdexec);
static int child_alive = 0;
volatile sig_atomic_t child_alive = 0;
static void sigchld_watcher(int signum)
{

2
ncat/ncat_proxy.c
View file

@ -72,8 +72,10 @@
/* SIG_CHLD handler */
static void proxyreaper(int signo)
{
int saved_errno = errno;
while (waitpid(-1, NULL, WNOHANG) > 0)
;
errno = saved_errno;
}
#endif

2
nmap_tty.cc
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@ -125,7 +125,7 @@ extern int tcsetattr(int fd, int actions, struct termios *termios_p);
#endif
#endif
static int tty_fd = 0;
static volatile sig_atomic_t tty_fd = 0;
static struct termios saved_ti;
static int tty_getchar()