asprintf.c File Reference

#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
int	vasprintf (char **strp, const char *fmt, va_list args)
	Write a formatted string to newly allocated memory. More...
int	asprintf (char **strp, const char *fmt,...)
	Write a formatted string to newly allocated memory. More...

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

vasprintf()

int vasprintf	(	char **	strp,
		const char *	fmt,
		va_list	args
	)

Write a formatted string to newly allocated memory.

Parameters

strp	Pointer to hold allocated string
fmt	Format string
args	Arguments corresponding to the format string

Return values

len	Length of formatted string

Definition at line 17 of file asprintf.c.

                                                             {
        size_t len;
        va_list args_tmp;

        /* Calculate length needed for string */
        va_copy ( args_tmp, args );
        len = ( vsnprintf ( NULL, 0, fmt, args_tmp ) + 1 );
        va_end ( args_tmp );

        /* Allocate and fill string */
        *strp = malloc ( len );
        if ( ! *strp )
                return -ENOMEM;
        return vsnprintf ( *strp, len, fmt, args );
}

References ENOMEM, fmt, len, malloc(), NULL, va_copy, va_end, and vsnprintf().

Referenced by asprintf(), and xfer_vprintf().

asprintf()

int asprintf	(	char **	strp,
		const char *	fmt,
			...
	)

Write a formatted string to newly allocated memory.

Parameters

strp	Pointer to hold allocated string
fmt	Format string
...	Arguments corresponding to the format string

Return values

len	Length of formatted string

Definition at line 41 of file asprintf.c.

                                                   {
        va_list args;
        int len;

        va_start ( args, fmt );
        len = vasprintf ( strp, fmt, args );
        va_end ( args );
        return len;
}

References fmt, len, va_end, va_start, and vasprintf().

Referenced by efi_block_label(), efi_local_check_volume_name(), expand_settings(), iscsi_fetch_settings(), peerdist_discovery_request(), resolve_path(), tftp_uri(), and xenstore_dump().