![]() MS_NOSUID Do not honor set-user-ID and set-group-ID bits or file capabilities whenĮxecuting programs from this filesystem. MS_NOEXEC Do not allow programs to be executed from this filesystem. Provides a subset of the functionality provided by MS_NOATIME that MS_NODIRATIME Do not update access times for directories on this filesystem. MS_NODEV Do not allow access to devices (special files) on this filesystem. MS_NOATIME Do not update access times for (all types of) files on thisįilesystem. Mandatory locking has beenįully deprecated in Linux 5.15, so this flag should be consideredĭeprecated. Must still be enabled on a per-file basis, as described inįcntl(2).) Since Linux 4.5, this mount option requires theĬAP_SYS_ADMIN capability and a kernel configured with theĬONFIG_MANDATORY_FILE_LOCKING option. Updates will be flushed to disk only in the cases listed above.) MS_MANDLOCK Permit mandatory locking on files in this filesystem. That stat(2) will return the correctly updated atime, but the atime (TheĪdvantage of combining MS_STRICTATIME and MS_LAZYTIME is Where the MS_STRICTATIME mount option is also enabled. Include frequent random writes to preallocated files, as well as cases Examples of workloads where this option could be of significant benefit System crash, the atime and mtime fields on disk might be out of date by Inode's timestamps, especially mtime and atime. This mount option significantly reduces writes needed to update the more than 24 hours have passed since the inode was written to disk.an undeleted inode is evicted from memory or.the application employs fsync(2), syncfs(2), or.the inode needs to be updated for some change unrelated to file.Maintaining these changes only in memory. (since Linux 4.0) Reduce on-disk updates of inode timestamps (atime, mtime, ctime) by (This property canīe obtained for individual directories or subtrees using (since Linux 2.5.19) Make directory changes on this filesystem synchronous. Or all of these flags, as described later in this page. Note that some operation types ignore some The list below describes the additional flags that can be Furtherįlags may be specified in mountflags to modify the behavior of Create a new mount: mountflags includes none of the aboveĮach of these operations is detailed later in this page.Move an existing mount to a new location: mountflags includes.Includes one of MS_SHARED, MS_PRIVATE, MS_SLAVE, or Change the propagation type of an existing mount: mountflags.Create a bind mount: mountflags includes MS_BIND.Remount an existing mount: mountflags includes.In mountflags, with the tests being conducted in the order listed TheĬhoice of which operation to perform is determined by testing the bits set Of operation, depending on the bits specified in mountflags. This argument may be specified as NULL, if thereĪ call to mount() performs one of a number of general types See mount(8) for details of the options availableįor each filesystem type. Typically it is a string of comma-separated options understoodīy this filesystem. The data argument is interpreted by the differentįilesystems. Kernel are listed in /proc/filesystems (e.g., "btrfs",įurther types may become available when the appropriate modules are Values for the filesystemtype argument supported by the Pathname of a directory or file, or a dummy string) to the location (aĭirectory or file) specified by the pathname in target.Īppropriate privilege (Linux: the CAP_SYS_ADMIN capability) ![]() (which is often a pathname referring to a device, but can also be the Mount() attaches the filesystem specified by source Standard C library ( libc, -lc) SYNOPSIS #include int mount(const char * source, const char * target, const char * filesystemtype, unsigned long mountflags, const void *_Nullable data ) DESCRIPTION ![]()
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