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Full Discussion: Mount from C code with --no-mtab?
Top Forums Programming Mount from C code with --no-mtab? Post 302883004 by shamrock on Friday 10th of January 2014 11:03:48 AM
Old 01-10-2014
Have you tried using the MS_READONLY flag to the mount syscall and below is an excerpt from the mount syscall manpage...
Code:
The mountflags argument may have the magic number 0xC0ED (MS_MGC_VAL) in the top 16 bits
(this was required in kernel versions prior to 2.4, but is no longer required  and  ignored
if specified), and various mount flags (as defined in <linux/fs.h> for libc4 and libc5 and in 
<sys/mount.h> for glibc2) in the low order 16 bits:
       .
       .
       .
       MS_RDONLY
              Mount file system read-only.

 

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LEARN ABOUT X11R4

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.

       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.

       Under  Linux  2.6.32  and  later  kernel  versions, mount.nfs can mount all NFS file system versions.  Under earlier Linux kernel versions,
       mount.nfs4 must be used for mounting NFSv4 file systems while mount.nfs must be used for NFSv3 and v2.

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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