libfuse
Data Fields
fuse_opt Struct Reference

#include <fuse_opt.h>

Data Fields

const char * templ
 
unsigned long offset
 
int value
 

Detailed Description

Option description

This structure describes a single option, and action associated with it, in case it matches.

More than one such match may occur, in which case the action for each match is executed.

There are three possible actions in case of a match:

i) An integer (int or unsigned) variable determined by 'offset' is set to 'value'

ii) The processing function is called, with 'value' as the key

iii) An integer (any) or string (char *) variable determined by 'offset' is set to the value of an option parameter

'offset' should normally be either set to

The 'offsetof()' macro is defined in the <stddef.h> header.

The template determines which options match, and also have an effect on the action. Normally the action is either i) or ii), but if a format is present in the template, then action iii) is performed.

The types of templates are:

1) "-x", "-foo", "--foo", "--foo-bar", etc. These match only themselves. Invalid values are "--" and anything beginning with "-o"

2) "foo", "foo-bar", etc. These match "-ofoo", "-ofoo-bar" or the relevant option in a comma separated option list

3) "bar=", "--foo=", etc. These are variations of 1) and 2) which have a parameter

4) "bar=%s", "--foo=%lu", etc. Same matching as above but perform action iii).

5) "-x ", etc. Matches either "-xparam" or "-x param" as two separate arguments

6) "-x %s", etc. Combination of 4) and 5)

If the format is "%s", memory is allocated for the string unlike with scanf(). The previous value (if non-NULL) stored at the this location is freed.

Field Documentation

unsigned long fuse_opt::offset

Offset of variable within 'data' parameter of fuse_opt_parse() or -1

const char* fuse_opt::templ

Matching template and optional parameter formatting

int fuse_opt::value

Value to set the variable to, or to be passed as 'key' to the processing function. Ignored if template has a format


The documentation for this struct was generated from the following file: