/* * linux/fs/lockd/svcshare.c * * Management of DOS shares. * * Copyright (C) 1996 Olaf Kirch */ #include #include #include #include #include #include #include #include static inline int nlm_cmp_owner(struct nlm_share *share, struct xdr_netobj *oh) { return share->s_owner.len == oh->len && !memcmp(share->s_owner.data, oh->data, oh->len); } __be32 nlmsvc_share_file(struct nlm_host *host, struct nlm_file *file, struct nlm_args *argp) { struct nlm_share *share; struct xdr_netobj *oh = &argp->lock.oh; u8 *ohdata; for (share = file->f_shares; share; share = share->s_next) { if (share->s_host == host && nlm_cmp_owner(share, oh)) goto update; if ((argp->fsm_access & share->s_mode) || (argp->fsm_mode & share->s_access )) return nlm_lck_denied; } share = kmalloc(sizeof(*share) + oh->len, GFP_KERNEL); if (share == NULL) return nlm_lck_denied_nolocks; /* Copy owner handle */ ohdata = (u8 *) (share + 1); memcpy(ohdata, oh->data, oh->len); share->s_file = file; share->s_host = host; share->s_owner.data = ohdata; share->s_owner.len = oh->len; share->s_next = file->f_shares; file->f_shares = share; update: share->s_access = argp->fsm_access; share->s_mode = argp->fsm_mode; return nlm_granted; } /* * Delete a share. */ __be32 nlmsvc_unshare_file(struct nlm_host *host, struct nlm_file *file, struct nlm_args *argp) { struct nlm_share *share, **shpp; struct xdr_netobj *oh = &argp->lock.oh; for (shpp = &file->f_shares; (share = *shpp) != NULL; shpp = &share->s_next) { if (share->s_host == host && nlm_cmp_owner(share, oh)) { *shpp = share->s_next; kfree(share); return nlm_granted; } } /* X/Open spec says return success even if there was no * corresponding share. */ return nlm_granted; } /* * Traverse all shares for a given file, and delete * those owned by the given (type of) host */ void nlmsvc_traverse_shares(struct nlm_host *host, struct nlm_file *file, nlm_host_match_fn_t match) { struct nlm_share *share, **shpp; shpp = &file->f_shares; while ((share = *shpp) != NULL) { if (match(share->s_host, host)) { *shpp = share->s_next; kfree(share); continue; } shpp = &share->s_next; } } put class='txt' type='search' size='10' name='q' value=''/>
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-rw-r--r--ati_pcigart.h692logplain
d---------bridge111logplain
-rw-r--r--drmP.h25758logplain
-rw-r--r--drm_agpsupport.h3867logplain
-rw-r--r--drm_atomic.h14443logplain
-rw-r--r--drm_atomic_helper.h10607logplain
-rw-r--r--drm_auth.h2260logplain
-rw-r--r--drm_blend.h2700logplain
-rw-r--r--drm_bridge.h7977logplain
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-rw-r--r--drm_debugfs_crc.h2670logplain
-rw-r--r--drm_displayid.h2850logplain
-rw-r--r--drm_dp_dual_mode_helper.h4532logplain
-rw-r--r--drm_dp_helper.h30638logplain
-rw-r--r--drm_dp_mst_helper.h16260logplain
-rw-r--r--drm_drv.h14861logplain
-rw-r--r--drm_edid.h14335logplain
-rw-r--r--drm_encoder.h8160logplain
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-rw-r--r--drm_fb_cma_helper.h1929logplain
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-rw-r--r--drm_fixed.h4825logplain
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-rw-r--r--drm_fourcc.h2748logplain
-rw-r--r--drm_framebuffer.h9623logplain
-rw-r--r--drm_gem.h8052logplain
-rw-r--r--drm_gem_cma_helper.h2286logplain
-rw-r--r--drm_global.h2011logplain
-rw-r--r--drm_hashtab.h3139logplain
-rw-r--r--drm_irq.h6323logplain
-rw-r--r--drm_legacy.h6933logplain
-rw-r--r--drm_mem_util.h2468logplain
-rw-r--r--drm_mipi_dsi.h10327logplain
-rw-r--r--drm_mm.h11462logplain
-rw-r--r--drm_mode_config.h23728logplain
-rw-r--r--drm_mode_object.h4911logplain
-rw-r--r--drm_modes.h17078logplain
-rw-r--r--drm_modeset_helper.h1576logplain
-rw-r--r--drm_modeset_helper_vtables.h41180logplain
-rw-r--r--drm_modeset_lock.h4241logplain
-rw-r--r--drm_of.h2034logplain
-rw-r--r--drm_os_linux.h2230logplain
-rw-r--r--drm_panel.h7079logplain
-rw-r--r--drm_pciids.h68035logplain
-rw-r--r--drm_plane.h19435logplain
-rw-r--r--drm_plane_helper.h3186logplain
-rw-r--r--drm_print.h3232logplain
-rw-r--r--drm_property.h11460logplain
-rw-r--r--drm_rect.h5103logplain
-rw-r--r--drm_simple_kms_helper.h4090logplain
-rw-r--r--drm_sysfs.h300logplain
-rw-r--r--drm_vma_manager.h7840logplain
-rw-r--r--gma_drm.h1033logplain
d---------i2c109logplain