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logging: add function to send message to foreground process

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This commit is contained in:
Miroslav Lichvar 2024-07-04 16:08:46 +02:00
parent 05bd4898a9
commit 7915f52495
2 changed files with 16 additions and 2 deletions
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13
logging.c
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@ -185,7 +185,7 @@ void LOG_Message(LOG_Severity severity,
/* Send the message also to the foreground process if it is /* Send the message also to the foreground process if it is
still running, or stderr if it is still open */ still running, or stderr if it is still open */
if (parent_fd > 0) { if (parent_fd > 0) {
if (write(parent_fd, buf, strlen(buf) + 1) < 0) if (!LOG_NotifyParent(buf))
; /* Not much we can do here */ ; /* Not much we can do here */
} else if (system_log && parent_fd == 0) { } else if (system_log && parent_fd == 0) {
system_log = 0; system_log = 0;
@ -291,6 +291,17 @@ LOG_SetParentFd(int fd)
/* ================================================== */ /* ================================================== */
int
LOG_NotifyParent(const char *message)
{
if (parent_fd <= 0)
return 1;
return write(parent_fd, message, strlen(message) + 1) > 0;
}
/* ================================================== */
void void
LOG_CloseParentFd() LOG_CloseParentFd()
{ {

5
logging.h
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@ -126,7 +126,10 @@ extern void LOG_OpenSystemLog(void);
/* Stop using stderr and send fatal message to the foreground process */ /* Stop using stderr and send fatal message to the foreground process */
extern void LOG_SetParentFd(int fd); extern void LOG_SetParentFd(int fd);
/* Close the pipe to the foreground process so it can exit */ /* Send a message to the foreground process */
extern int LOG_NotifyParent(const char *message);
/* Close the pipe to the foreground process */
extern void LOG_CloseParentFd(void); extern void LOG_CloseParentFd(void);
/* File logging functions */ /* File logging functions */