Some misc utility functions

Defines
#define	IX_SPAWN_DEFAULT   0
	no specific spawn options
#define	IX_SPAWN_SESSION   1
	spawn process as session leader
Functions
int	ix_daemon (char *dir)
void *	memdup (void *src, size_t len)
char *	ix_path (void)
char *	ix_stralloc (char *s, int len)
char *	ix_strncpy (char *d, char *s, int len)
pid_t	ix_spawn (char *cmd, int opt, int f[3], char *env[])
int	ix_getpidof (char *proc, pid_t pid[], int maxpid)
	get process id by name
int	ix_read_block (int fd, void *buffer, int len, int tio)
int	ix_write_block (int sd, void *buffer, int len, int tio)

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Function Documentation

int ix_daemon

(

char *

dir

)

process is set to daemon state

Parameters:

dir

if not NULL change current working directory to dir

Returns:

• 0 OK
• !0: Error

int ix_getpidof	(	char *	proc,
		pid_t	pid[],
		int	maxpid
	)

get process id by name

get a list of process ids by name

Parameters:

proc

process name array of pid to fill maximal number of entries in pid

Returns:

• number of process found
• 0 error or no process found

char* ix_path

(

void

)

returns the ixtools working path

pid_t ix_spawn	(	char *	cmd,
		int	opt,
		int	f[3],
		char *	env[]
	)

spawn a new process

Parameters:

	cmd	process name to start
	opt	options
	f	array of open filedescriptors to redirect stdin, stdout, stderr (if not supplied the stdin, stdout and stderr from calling process are inherited)
	env	null terminated array of environment settings

Returns:

• pid of new process
• <=0 error

char* ix_stralloc	(	char *	s,
		int	len
	)

allocates memory of len+1 bytes and duplicates s

char* ix_strncpy	(	char *	d,
		char *	s,
		int	len
	)

copies s to d but no more than len bytes, ensures that d is zero terminated

void* memdup	(	void *	src,
		size_t	len
	)

memdup like strdup ;-)

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