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a0158e6927
With this macro we can easily declare struct mntns_zdtm variables with all lists properly initiallized. Let's use it in mount_complex_sharing as without it we can have segfault on error path when accessing uninitialized list pointers. Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
#ifndef __ZDTM_MOUNTINFO__
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#define __ZDTM_MOUNTINFO__
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#include "list.h"
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struct mountinfo_zdtm {
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int mnt_id;
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int parent_mnt_id;
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char *mountpoint;
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char *root;
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unsigned int s_dev;
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int shared_id;
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int master_id;
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char *fstype;
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/* list of all mounts */
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struct list_head list;
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};
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struct mntns_zdtm {
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struct list_head mountinfo_list;
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struct list_head topology_list;
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struct mountinfo_topology *tree;
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struct list_head sharing_groups_list;
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};
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#define MNTNS_ZDTM_INIT(name) \
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{ \
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.mountinfo_list = LIST_HEAD_INIT(name.mountinfo_list), \
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.topology_list = LIST_HEAD_INIT(name.topology_list), \
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.sharing_groups_list = LIST_HEAD_INIT(name.sharing_groups_list), \
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}
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#define MNTNS_ZDTM(name) struct mntns_zdtm name = MNTNS_ZDTM_INIT(name)
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struct sharing_group {
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int shared_id;
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int master_id;
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unsigned int s_dev;
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struct sharing_group *parent;
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struct list_head children;
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struct list_head siblings;
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int topology_id;
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struct list_head mounts_list;
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struct list_head list;
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};
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struct mountinfo_topology {
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struct mountinfo_zdtm *mountinfo;
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struct mountinfo_topology *parent;
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struct list_head children;
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struct list_head siblings;
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int topology_id;
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struct sharing_group *sharing;
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struct list_head sharing_list;
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struct list_head list;
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};
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extern int mntns_parse_mountinfo(struct mntns_zdtm *mntns);
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extern void mntns_free_all(struct mntns_zdtm *mntns);
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extern int mntns_compare(struct mntns_zdtm *mntns_a, struct mntns_zdtm *mntns_b);
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#endif
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