.TH LLAPI_POOL_NAME_VALIDATE 3 2026-08-23 "Lustre User API" "Lustre Library Functions"
.SH NAME
llapi_pool_name_validate() \- check pool name contains only valid characters
.SH SYNOPSIS
.nf
.B #include <lustre/lustreapi.h>
.PP
.BI "int llapi_pool_name_validate(const char **" pool_name ");"
.fi
.SH DESCRIPTION
.B llapi_pool_name_validate()
verifies that the characters in
.I pool_name
contain only alphanumeric characters, '-', and '_', and is not longer than
.I LOV_MAXPOOLNAME
(15) bytes in length (excluding NUL terminator).
If
.I pool_name
is of the form
.IR fsname . pool_name
then the leading
.I fsname.
part of the pool name is removed and the
.I pool_name
pointer will only point at the pool name upon return.
This ensures that
.I pool_name
is suitable for use in filesystem pool identifiers.
If the removal of the leading
.I fsname.
component of the pool name is undesirable, then
.BR llapi_name_validate (3)
should be used to verify the pool name.
.SH RETURN VALUE
.B llapi_pool_name_validate()
returns 0 on success, or a negative errno value on failure.
.SH ERRORS
.TP 15
.SM EINVAL
The supplied
.B name
contained an illegal character.
.TP
.SM ENAMETOOLONG
The supplied
.B name
exceeded
.B LOV_MAXPOOLNAME
characters without a NUL terminator.
.TP
.SM ENXIO
The
.B name
was NULL or empty.
.SH EXAMPLES
Check if
.B pool_name
can be used as a pool identifier.
.PP
.EX
#include <string.h>
#include <lustre/lustreapi.h>

int main(int argc, char *argv[])
{
        char pool_name[] = "newfs123.testpool";

        rc = llapi_pool_name_validate(&pool_name);
        if (rc < 0) {
                fprintf(stderr, "%s: pool name '%s' invalid: %s\\n",
                        argv[1], pool_name, strerror(errno));
                return rc;
        }
}
.EE
.SH AVAILABILITY
.B llapi_pool_name_validate
is part of the
.BR lustre (7)
filesystem package since release 2.18.0.
.\" added in commit v2_17_56
.SH SEE ALSO
.BR llapi_name_validate (3),
.BR lustreapi (7)