exfile.h File Reference

API for managing concurrent file access. More...

#include <freeradius-devel/server/request.h>

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Typedefs
typedef struct exfile_s	exfile_t

Functions
int	exfile_close (exfile_t *lf, CC_RELEASE_HANDLE("exfile_fd") int fd)
void	exfile_enable_triggers (exfile_t *ef, CONF_SECTION *cs, char const *trigger_prefix, fr_pair_list_t *trigger_args)
	Enable triggers for an exfiles handle. More...
exfile_t *	exfile_init (TALLOC_CTX *ctx, uint32_t entries, fr_time_delta_t idle, bool locking)
	Initialize a way for multiple threads to log to one or more files. More...
int	exfile_open (exfile_t *lf, char const *filename, mode_t permissions, off_t *offset)
	Open a new log file, or maybe an existing one. More...

Detailed Description

API for managing concurrent file access.

Id

1fe9b15623b3a66ac71fd6a70c66337a4ee1b2de

Copyright

2014 The FreeRADIUS server project

Definition in file exfile.h.

Typedef Documentation

exfile_t

typedef struct exfile_s exfile_t

Definition at line 1 of file exfile.h.

Function Documentation

exfile_close()

int exfile_close	(	exfile_t *	lf,
		CC_RELEASE_HANDLE("exfile_fd") int	fd
	)

exfile_enable_triggers()

void exfile_enable_triggers	(	exfile_t *	ef,
		CONF_SECTION *	conf,
		char const *	trigger_prefix,
		fr_pair_list_t *	trigger_args
	)

Enable triggers for an exfiles handle.

Parameters

[in]	ef	to enable triggers for.
[in]	conf	section to search for triggers in.
[in]	trigger_prefix	prefix to prepend to all trigger names. Usually a path to the module's trigger configuration .e.g. modules.<name>.file <trigger name> is appended to form the complete path.
[in]	trigger_args	to make available in any triggers executed by the exfile api. Exfile-File is automatically added to this list.

Definition at line 195 of file exfile.c.

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exfile_init()

exfile_t* exfile_init	(	TALLOC_CTX *	ctx,
		uint32_t	max_entries,
		fr_time_delta_t	max_idle,
		bool	locking
	)

Initialize a way for multiple threads to log to one or more files.

Parameters

ctx	The talloc context
max_entries	Max file descriptors to cache, and manage locks for.
max_idle	Maximum time a file descriptor can be idle before it's closed.
locking	whether or not to lock the files.

Returns

• new context.
• NULL on error.

Definition at line 147 of file exfile.c.

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exfile_open()

int exfile_open	(	exfile_t *	ef,
		char const *	filename,
		mode_t	permissions,
		off_t *	offset
	)

Open a new log file, or maybe an existing one.

When multithreaded, the FD is locked via a mutex. This way we're sure that no other thread is writing to the file.

Parameters

ef	The logfile context returned from exfile_init().
filename	the file to open.
permissions	to use.
offset	Optional pointer to store offset in when seeking the end of file.

Returns

• FD used to write to the file.
• -1 on failure.

Definition at line 505 of file exfile.c.

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