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Full Discussion: A question about the system call mount in a C program
Top Forums Programming A question about the system call mount in a C program Post 302344460 by dariyoosh on Sunday 16th of August 2009 06:51:56 PM
Old 08-16-2009
Hello there,



Thanks for your answer.

Quote:
Originally Posted by Corona688
It probably doesn't like the options.
...
If you prefer those style options, it might be better to stick with the utilities as you have them than use hardcoded kernel calls.
Actually, the only reason that I wrote those options in my code was due to
what I read in 'man 2 mount'

Code:
#include <sys/mount.h>

       int mount(const char *source, const char *target,
                 const char *filesystemtype, unsigned long mountflags,
                 const void *data);
.
.
.
The  data  argument  is  interpreted  by  the different file systems.
Typically it is a string of comma-separated options understood by this file
system.  See mount(8) for details of the options  available  for  each 
filesystem type.

Well, I looked mount(8) but I found nothing for the file system 'fuseblk'
so I didn't really know what to put as argument for the last parameter
of the mount system call (that is, const void *data). Therefore I thought
maybe it is the same as /etc/mtab, which seems that it is not the case.

I really need to do this mount and umount within the C code. If it was a
script (bash, KornShell, etc.) it would have been much easier, but
what I want to do is part of a C application and therefore I need to use
a system call. I wonder whether there is other system calls allowing
to mount/umount devices. Because I looked the POSIX specification

The Open Group Base Specifications Issue 7

and it seems that mount is linux specific (there is no mount.h), because I
couldn't find the system call among the list of POSIX system calls. Do you
know any other system call?


Regards,
Dariyoosh
 

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LEARN ABOUT SUSE

mount.nfs

MOUNT.NFS(8)						      System Manager's Manual						      MOUNT.NFS(8)

NAME

       mount.nfs, mount.nfs4 - mount a Network File System

SYNOPSIS

       mount.nfs remotetarget dir [-rvVwfnsh ] [-o options]

DESCRIPTION

       mount.nfs is a part of nfs(5) utilities package, which provides NFS client functionality.

       mount.nfs  is  meant to be used by the mount(8) command for mounting NFS shares. This subcommand, however, can also be used as a standalone
       command with limited functionality.

       mount.nfs4 is used for mounting NFSv4 file system, while mount.nfs is used to mount NFS file systems versions 3 or 2.   remotetarget  is  a
       server share usually in the form of servername:/path/to/share.  dir is the directory on which the file system is to be mounted.

OPTIONS

       -r     Mount file system readonly.

       -v     Be verbose.

       -V     Print version.

       -w     Mount file system read-write.

       -f     Fake mount. Don't actually call the mount system call.

       -n     Do not update /etc/mtab.	By default, an entry is created in /etc/mtab for every mounted file system. Use this option to skip making
	      an entry.

       -s     Tolerate sloppy mount options rather than fail.

       -h     Print help message.

       nfsoptions
	      Refer to nfs(5) or mount(8) manual pages.

NOTE

       For further information please refer nfs(5) and mount(8) manual pages.

FILES

       /etc/fstab	 file system table

       /etc/mtab	 table of mounted file systems

SEE ALSO

       nfs(5), mount(8),

AUTHOR

       Amit Gud <agud@redhat.com>

								    5 Jun 2006							      MOUNT.NFS(8)
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