Create or open files

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Detailed Description

The open family of functions provide wrappers around open(2) with different flags.

Functions
int	open_append (const char *filename)
	open file in append mode
int	open_excl (const char *filename)
	open file exclusively
int	open_read (const char *filename)
	open file for reading
int	open_rw (const char *filename)
	open file for reading and writing
int	open_trunc (const char *filename)
	open and truncate file for reading and writing
int	open_write (const char *filename)
	open file for writing

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Function Documentation

int open_append

(

const char *

filename

)

open file in append mode

Parameters:

filename

file to open

Returns:

filedescriptor on success, -1 otherwise with errno set

See also:

Create or open files

Definition at line 21 of file open_append.c.

{
        return open(filename, O_WRONLY|O_NONBLOCK|O_APPEND|O_CREAT, 0666);
}

int open_excl

(

const char *

filename

)

open file exclusively

Parameters:

filename

file to open

Returns:

filedescriptor on success, -1 otherwise with errno set

See also:

Create or open files

Definition at line 21 of file open_excl.c.

{
        return open(filename, O_WRONLY|O_NONBLOCK|O_CREAT|O_EXCL, 0666);
}

int open_read

(

const char *

filename

)

open file for reading

Parameters:

filename

file to open

Returns:

filedescriptor on success, -1 otherwise with errno set

See also:

Create or open files

Definition at line 21 of file open_read.c.

Referenced by chroot_mkdirp(), chroot_secure_chdir(), and mkdirp().

{
        return open(filename, O_RDONLY|O_NONBLOCK);
}

int open_rw

(

const char *

filename

)

open file for reading and writing

Parameters:

filename

file to open

Returns:

filedescriptor on success, -1 otherwise with errno set

See also:

Create or open files

Definition at line 21 of file open_rw.c.

{
        return open(filename, O_RDWR|O_NONBLOCK|O_CREAT, 0666);
}

int open_trunc

(

const char *

filename

)

open and truncate file for reading and writing

Parameters:

filename

file to open

Returns:

filedescriptor on success, -1 otherwise with errno set

See also:

Create or open files

Definition at line 21 of file open_trunc.c.

{
        return open(filename, O_WRONLY|O_NONBLOCK|O_CREAT|O_TRUNC, 0666);
}

int open_write

(

const char *

filename

)

open file for writing

Parameters:

filename

file to open

Returns:

filedescriptor on success, -1 otherwise with errno set

See also:

Create or open files

Definition at line 21 of file open_write.c.

{
        return open(filename, O_WRONLY|O_NONBLOCK|O_CREAT, 0666);
}

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