The --create-group-mounts option takes a group name as an
argument and creates a subdir to /var/lib/hugetlbfs/ with
that group name. It then creates a mount point for each
available huge page size under that directory with mode
070, mounts it with the appropriate pagesize argument and
chowns it to the specified group.
The --create-user-mounts option does the same as the
group-mounts option except it takes a username, the
mode is 700, and it is chowned to the specified user.
Signed-off-by: Eric B Munson <ebmun...@us.ibm.com>
---
Changes from V3:
Rebase to new mount point creation code
Changes from V2:
Update hugeadm man page with new options
Changes from V1:
Ensure that the base MOUNTS_DIR is readable by all
hugeadm.c | 28 +++++++++++++++++++++++++---
man/hugeadm.8 | 15 +++++++++++++++
2 files changed, 40 insertions(+), 3 deletions(-)
diff --git a/hugeadm.c b/hugeadm.c
index e28fe78..3e492dc 100644
--- a/hugeadm.c
+++ b/hugeadm.c
@@ -73,6 +73,14 @@ void print_usage()
CONT("Adjust pool 'size' upper bound");
OPTION("--create-mounts", "Creates a mount point for each available");
CONT("huge page size on this system under /var/lib/hugetlbfs");
+ OPTION("--create-user-mounts <user>", "");
+ CONT("Creates a mount point for each available huge");
+ CONT("page size under /var/lib/hugetlbfs/<user>");
+ CONT("usable by user <user>");
+ OPTION("--create-group-mounts <group>", "");
+ CONT("Creates a mount point for each available huge");
+ CONT("page size under /var/lib/hugetlbfs/<group>");
+ CONT("usable by group <group>");
OPTION("--page-sizes", "Display page sizes that a configured pool");
OPTION("--page-sizes-all",
@@ -98,9 +106,11 @@ int opt_dry_run = 0;
#define LONG_PAGE_SIZES (LONG_PAGE|'s')
#define LONG_PAGE_AVAIL (LONG_PAGE|'a')
-#define LONG_MOUNTS ('m' << 8)
-#define LONG_CREATE_MOUNTS (LONG_MOUNTS|'C')
-#define LONG_LIST_ALL_MOUNTS (LONG_MOUNTS|'A')
+#define LONG_MOUNTS ('m' << 8)
+#define LONG_CREATE_MOUNTS (LONG_MOUNTS|'C')
+#define LONG_CREATE_USER_MOUNTS (LONG_MOUNTS|'U')
+#define LONG_CREATE_GROUP_MOUNTS (LONG_MOUNTS|'G')
+#define LONG_LIST_ALL_MOUNTS (LONG_MOUNTS|'A')
#define MAX_POOLS 32
@@ -541,6 +551,8 @@ int main(int argc, char** argv)
{"pool-pages-min", required_argument, NULL, LONG_POOL_MIN_ADJ},
{"pool-pages-max", required_argument, NULL, LONG_POOL_MAX_ADJ},
{"create-mounts", no_argument, NULL, LONG_CREATE_MOUNTS},
+ {"create-user-mounts", required_argument, NULL,
LONG_CREATE_USER_MOUNTS},
+ {"create-group-mounts", required_argument, NULL,
LONG_CREATE_GROUP_MOUNTS},
{"page-sizes", no_argument, NULL, LONG_PAGE_SIZES},
{"page-sizes-all", no_argument, NULL, LONG_PAGE_AVAIL},
@@ -611,6 +623,16 @@ int main(int argc, char** argv)
create_mounts(NULL, NULL, base, S_IRWXU | S_IRWXG);
break;
+ case LONG_CREATE_USER_MOUNTS:
+ snprintf(base, PATH_MAX, "%s/user", MOUNT_DIR);
+ create_mounts(optarg, NULL, base, S_IRWXU);
+ break;
+
+ case LONG_CREATE_GROUP_MOUNTS:
+ snprintf(base, PATH_MAX, "%s/group", MOUNT_DIR);
+ create_mounts(NULL, optarg, base, S_IRWXG);
+ break;
+
case LONG_PAGE_SIZES:
page_sizes(0);
break;
diff --git a/man/hugeadm.8 b/man/hugeadm.8
index d3fcab5..8cf5b5a 100644
--- a/man/hugeadm.8
+++ b/man/hugeadm.8
@@ -39,6 +39,21 @@ This creates mount points for each supported huge page size
under
root:root with permissions set to 770. Each mount point is named
pagesize-<size in bytes>.
+.TP
+.B --create-user-mounts=<user>
+
+This creates mount points for each supported huge page size under
+/var/lib/hugetlbfs/user/<user>. Mount point naming is the same as
+--create-mounts. After creation they are mounted and are owned by
+<user>:root with permissions set to 700.
+
+.TP
+.B --create-group-mounts=<group>
+
+This creates mount points for each supported huge page size under
+/var/lib/hugetlbfs/group/<group>. Mount point naming is the same as
+--create-mounts. After creation they are mounted and are owned by
+root:<group> with permissions set to 070.
The following options display information about the pools.
--
1.6.0.3
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