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Re-share zfsdev_getminor and zfs_onexit_fd_hold

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By adding a zfs_file_private accessor to the common
interfaces and some extensions to FreeBSD platform
code it is now possible to share the implementations
for the aforementioned functions.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #10073
This commit is contained in:
Matthew Macy
2020-02-28 14:50:32 -08:00
committed by GitHub
parent 9cdf7b1f6b
commit ae9f92f6f3
7 changed files with 81 additions and 100 deletions
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module/zfs/zfs_ioctl.c
+35
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@@ -7154,6 +7154,41 @@ pool_status_check(const char *name, zfs_ioc_namecheck_t type,
return (error);
}
int
zfsdev_getminor(int fd, minor_t *minorp)
{
zfsdev_state_t *zs, *fpd;
zfs_file_t *fp;
int rc;
ASSERT(!MUTEX_HELD(&zfsdev_state_lock));
if ((rc = zfs_file_get(fd, &fp)))
return (rc);
fpd = zfs_file_private(fp);
if (fpd == NULL)
return (SET_ERROR(EBADF));
mutex_enter(&zfsdev_state_lock);
for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
if (zs->zs_minor == -1)
continue;
if (fpd == zs) {
*minorp = fpd->zs_minor;
mutex_exit(&zfsdev_state_lock);
return (0);
}
}
mutex_exit(&zfsdev_state_lock);
return (SET_ERROR(EBADF));
}
static void *
zfsdev_get_state_impl(minor_t minor, enum zfsdev_state_type which)
{