dc207f669
Denys Vlasenko
2017-02-16
Subject
udhcp: do not clobber errno by signal handler
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networking/udhcp/signalpipe.c+2 -0
| @@ -25,9 +25,11 @@ static struct fd_pair signal_pipe; | |
| static void signal_handler(int sig) | |
| { | |
| + | int sv = errno; |
| unsigned char ch = sig; /* use char, avoid dealing with partial writes */ | |
| if (write(signal_pipe.wr, &ch, 1) != 1) | |
| bb_perror_msg("can't send signal"); | |
| + | errno = sv; |
| } | |
| /* Call this before doing anything else. Sets up the socket pair | |