Signal Queue API.

Typedefs
typedef struct rpmsig_s *	rpmsig
typedef struct rpmsqElem *	rpmsq
typedef void(*	rpmsqAction_t )(int signum)
	Default signal handler prototype.
Functions
int	rpmsqIsCaught (int signum)
	Test if given signal has been caught (while signals blocked).
void	rpmsqAction (int signum)
	Default signal handler.
int	rpmsqEnable (int signum, rpmsqAction_t handler)
	Enable or disable a signal handler.
pid_t	rpmsqFork (rpmsq sq)
	Fork a child process.
pid_t	rpmsqWait (rpmsq sq)
	Wait for child process to be reaped.
void *	rpmsqThread (void *(*start)(void *arg), void *arg)
	Call a function in a thread.
int	rpmsqJoin (void *thread)
	Wait for thread to terminate.
int	rpmsqThreadEqual (void *thread)
	Compare thread with current thread.
int	rpmsqExecve (const char **argv)
	Execute a command, returning its status.

---

Typedef Documentation

typedef struct rpmsig_s* rpmsig

Definition at line 18 of file rpmsq.h.

typedef struct rpmsqElem* rpmsq

Definition at line 22 of file rpmsq.h.

typedef void(* rpmsqAction_t)(int signum)

Default signal handler prototype.

Parameters:

	signum	signal number
	info	(siginfo_t) signal info
	context	signal context

Definition at line 33 of file rpmsq.h.

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Function Documentation

void rpmsqAction

(

int

signum

)

Default signal handler.

Parameters:

	signum	signal number
	info	(siginfo_t) signal info
	context	signal context

int rpmsqEnable	(	int	signum,
		rpmsqAction_t	handler
	)

Enable or disable a signal handler.

Parameters:

	signum	signal to enable (or disable if negative)
	handler	sa_sigaction handler (or NULL to use rpmsqHandler())

Returns:

no. of refs, -1 on error

int rpmsqExecve

(

const char **

argv

)

Execute a command, returning its status.

pid_t rpmsqFork

(

rpmsq

sq

)

Fork a child process.

Parameters:

sq

scriptlet queue element

Returns:

fork(2) pid

int rpmsqIsCaught

(

int

signum

)

Test if given signal has been caught (while signals blocked).

Similar to sigismember() but operates on internal signal queue.

Parameters:

signum

signal to test for

Returns:

1 if caught, 0 if not and -1 on error

int rpmsqJoin

(

void *

thread

)

Wait for thread to terminate.

Parameters:

thread

thread

Returns:

0 on success

void* rpmsqThread	(	void *(*)(void *arg)	start,
		void *	arg
	)

Call a function in a thread.

Parameters:

	start	function
	arg	function argument

Returns:

thread pointer (NULL on error)

int rpmsqThreadEqual

(

void *

thread

)

Compare thread with current thread.

Parameters:

thread

thread

Returns:

0 if not equal

pid_t rpmsqWait

(

rpmsq

sq

)

Wait for child process to be reaped.

Parameters:

sq

scriptlet queue element

Returns:

reaped child pid