.TH LLAPI_HSM_STATE_SET 3 2024-08-27 "Lustre User API" "Lustre Library Functions"
.SH NAME
llapi_hsm_state_set, llapi_hsm_state_set_fd \- set HSM flags for a file on Lustre filesystem
.SH SYNOPSIS
.nf
.B #include <lustre/lustreapi.h>
.PP
.BI "int llapi_hsm_state_set(const char *" path ", __u64 " setmask ",
.BI "                        __u64 " clearmask ", __u32 " archive_id ");"
.PP
.BI "int llapi_hsm_state_set_fd(int " fd ", __u64 " setmask ",
.BI "                           __u64 " clearmask ", __u32 " archive_id ");"
.fi
.SH DESCRIPTION
.B llapi_hsm_state_set()
.B llapi_hsm_state_set_fd()
sets, clears HSM flags and modifies archive ID for file pointed by
.I path
or
.IR fd .
.TP 20
.I setmask
Mask of flags to be added.
.TP
.I clearmask
Mask of flags to be removed.
.TP
.I archive_id
Archive ID (greater than 0) used for this file. Use 0 if you do not want to
change it.
.PP
See
.BR llapi_hsm_state_get (3)
for available flags.
.SH RETURN VALUES
.B llapi_hsm_state_set()
and
.B llapi_hsm_state_set_fd()
return:
.TP 7
0
on success
.TP
!= 0
on failure,
.I errno
is set appropriately.
.SH ERRORS
.TP 15
.B -ENOMEM
failed to allocate memory.
.TP
.B -ENAMETOOLONG
.I path
was too long.
.TP
.B -ENOENT
.I path
does not point to a file or a directory.
.TP
.B -ENOTTY
.I path
does not point to a Lustre filesystem.
.TP
.B -EINVAL
Provided masks resulted in an incompatible set of flags.
.SH EXAMPLES
.nf
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
\&
#include <lustre/lustreapi.h>
\&
int main(int argc, char **argv)
{
	int rc;
\&
	if (argc < 2) {
		fprintf(stderr, "usage: prog FILEPATH\\n");
		exit(1);
	}
\&
	rc = llapi_hsm_state_set(argv[1], HS_DIRTY|HS_NORELEASE, 0, 0);
	if (rc != 0) {
		fprintf(stderr, "Can't change hsm flags for %s: %s\\n",
			argv[1], strerror(errno = -rc));
		exit(rc);
	}
\&
	exit(0);
}
.fi
.SH AVAILABILITY
.B llapi_hsm_state_set
and
.B llapi_hsm_state_set_fd
are part of the
.BR lustre (7)
user application interface library since release 2.4.0
.\" Added in commit 2.3.53-7-gf715e4e298
.SH SEE ALSO
.BR llapi_hsm_state_get (3),
.BR llapi_hsm_state_get_fd (3),
.BR lustre (7),
.BR lustreapi (7)