dexec.h(3) Contains a robust API for running sub processes with STDOUT and STDERR redirected to syslog.

SYNOPSIS


#include <stdarg.h>

Macros


#define DAEMON_EXEC_AVAILABLE 1
This variable is defined to 1 iff daemon_exec() is supported.
#define DAEMON_GCC_SENTINEL
A macro for making use of GCCs printf compilation warnings.
#define DAEMON_EXECV_AVAILABLE 1
This variable is defined to 1 iff daemon_execv() is supported.

Functions


int daemon_exec (const char *dir, int *ret, const char *prog,...) DAEMON_GCC_SENTINEL
Run the specified executable with the specified arguments in the specified directory and return the return value of the program in the specified pointer.
int daemon_execv (const char *dir, int *ret, const char *prog, va_list ap)
The same as daemon_exec, but without variadic arguments.

Detailed Description

Contains a robust API for running sub processes with STDOUT and STDERR redirected to syslog.

Definition in file dexec.h.

Macro Definition Documentation

#define DAEMON_EXEC_AVAILABLE 1

This variable is defined to 1 iff daemon_exec() is supported.

Since:

0.4

See Also:

daemon_exec()

Definition at line 39 of file dexec.h.

#define DAEMON_EXECV_AVAILABLE 1

This variable is defined to 1 iff daemon_execv() is supported.

Since:

0.11

See Also:

daemon_execv()

Definition at line 68 of file dexec.h.

#define DAEMON_GCC_SENTINEL

A macro for making use of GCCs printf compilation warnings.

Definition at line 45 of file dexec.h.

Function Documentation

int daemon_exec (const char *dir, int *ret, const char *prog, ...)

Run the specified executable with the specified arguments in the specified directory and return the return value of the program in the specified pointer. The calling process is blocked until the child finishes and all child output (either STDOUT or STDIN) has been written to syslog. Running this function requires that daemon_signal() has been called with SIGCHLD as argument.

Parameters:

dir Working directory for the process.
ret A pointer to an integer to write the return value of the program to.
prog The path to the executable
... The arguments to be passed to the program, followed by a (char *) NULL

Returns:

Nonzero on failure, zero on success

Since:

0.4

See Also:

DAEMON_EXEC_AVAILABLE

Examples: testd.c.

int daemon_execv (const char *dir, int *ret, const char *prog, va_listap)

The same as daemon_exec, but without variadic arguments.

Since:

0.11

See Also:

DAEMON_EXECV_AVAILABLE

Author

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