/* * fs/kernfs/symlink.c - kernfs symlink implementation * * Copyright (c) 2001-3 Patrick Mochel * Copyright (c) 2007 SUSE Linux Products GmbH * Copyright (c) 2007, 2013 Tejun Heo * * This file is released under the GPLv2. */ #include #include #include #include "kernfs-internal.h" /** * kernfs_create_link - create a symlink * @parent: directory to create the symlink in * @name: name of the symlink * @target: target node for the symlink to point to * * Returns the created node on success, ERR_PTR() value on error. */ struct kernfs_node *kernfs_create_link(struct kernfs_node *parent, const char *name, struct kernfs_node *target) { struct kernfs_node *kn; int error; kn = kernfs_new_node(parent, name, S_IFLNK|S_IRWXUGO, KERNFS_LINK); if (!kn) return ERR_PTR(-ENOMEM); if (kernfs_ns_enabled(parent)) kn->ns = target->ns; kn->symlink.target_kn = target; kernfs_get(target); /* ref owned by symlink */ error = kernfs_add_one(kn); if (!error) return kn; kernfs_put(kn); return ERR_PTR(error); } static int kernfs_get_target_path(struct kernfs_node *parent, struct kernfs_node *target, char *path) { struct kernfs_node *base, *kn; char *s = path; int len = 0; /* go up to the root, stop at the base */ base = parent; while (base->parent) { kn = target->parent; while (kn->parent && base != kn) kn = kn->parent; if (base == kn) break; strcpy(s, "../"); s += 3; base = base->parent; } /* determine end of target string for reverse fillup */ kn = target; while (kn->parent && kn != base) { len += strlen(kn->name) + 1; kn = kn->parent; } /* check limits */ if (len < 2) return -EINVAL; len--; if ((s - path) + len > PATH_MAX) return -ENAMETOOLONG; /* reverse fillup of target string from target to base */ kn = target; while (kn->parent && kn != base) { int slen = strlen(kn->name); len -= slen; strncpy(s + len, kn->name, slen); if (len) s[--len] = '/'; kn = kn->parent; } return 0; } static int kernfs_getlink(struct dentry *dentry, char *path) { struct kernfs_node *kn = dentry->d_fsdata; struct kernfs_node *parent = kn->parent; struct kernfs_node *target = kn->symlink.target_kn; int error; mutex_lock(&kernfs_mutex); error = kernfs_get_target_path(parent, target, path); mutex_unlock(&kernfs_mutex); return error; } static const char *kernfs_iop_get_link(struct dentry *dentry, struct inode *inode, struct delayed_call *done) { char *body; int error; if (!dentry) return ERR_PTR(-ECHILD); body = kzalloc(PAGE_SIZE, GFP_KERNEL); if (!body) return ERR_PTR(-ENOMEM); error = kernfs_getlink(dentry, body); if (unlikely(error < 0)) { kfree(body); return ERR_PTR(error); } set_delayed_call(done, kfree_link, body); return body; } const struct inode_operations kernfs_symlink_iops = { .listxattr = kernfs_iop_listxattr, .get_link = kernfs_iop_get_link, .setattr = kernfs_iop_setattr, .getattr = kernfs_iop_getattr, .permission = kernfs_iop_permission, }; 644'>clock
ModeNameSize
-rw-r--r--alphascale,asm9260.h2695logplain
-rw-r--r--at91.h751logplain
-rw-r--r--ath79-clk.h479logplain
-rw-r--r--axis,artpec6-clkctrl.h1112logplain
-rw-r--r--bcm-cygnus.h3135logplain
-rw-r--r--bcm-ns2.h2915logplain
-rw-r--r--bcm-nsp.h2148logplain
-rw-r--r--bcm21664.h1984logplain
-rw-r--r--bcm281xx.h2456logplain
-rw-r--r--bcm2835-aux.h635logplain
-rw-r--r--bcm2835.h1962logplain
-rw-r--r--berlin2.h1034logplain
-rw-r--r--berlin2q.h695logplain
-rw-r--r--clps711x-clock.h718logplain
-rw-r--r--efm32-cmu.h1112logplain
-rw-r--r--exynos-audss-clk.h597logplain
-rw-r--r--exynos3250.h9083logplain
-rw-r--r--exynos4.h8284logplain
-rw-r--r--exynos4415.h9828logplain
-rw-r--r--exynos5250.h4616logplain
-rw-r--r--exynos5260-clk.h14876logplain
-rw-r--r--exynos5410.h1689logplain
-rw-r--r--exynos5420.h6857logplain
-rw-r--r--exynos5433.h45372logplain
-rw-r--r--exynos5440.h1141logplain
-rw-r--r--exynos7-clk.h5281logplain
-rw-r--r--gxbb-aoclkc.h2866logplain
-rw-r--r--gxbb-clkc.h592logplain
-rw-r--r--hi3516cv300-clock.h1668logplain
-rw-r--r--hi3519-clock.h1328logplain
-rw-r--r--hi3620-clock.h4496logplain
-rw-r--r--hi6220-clock.h4508logplain
-rw-r--r--hip04-clock.h1137logplain
-rw-r--r--histb-clock.h2012logplain
-rw-r--r--hix5hd2-clock.h2415logplain
-rw-r--r--imx1-clock.h1055logplain
-rw-r--r--imx21-clock.h2461logplain
-rw-r--r--imx27-clock.h3494logplain
-rw-r--r--imx5-clock.h7212logplain
-rw-r--r--imx6qdl-clock.h9593logplain
-rw-r--r--imx6sl-clock.h5849logplain
-rw-r--r--imx6sx-clock.h9099logplain
-rw-r--r--imx6ul-clock.h8203logplain
-rw-r--r--imx7d-clock.h15974logplain
-rw-r--r--jz4740-cgu.h1028logplain
-rw-r--r--jz4780-cgu.h2470logplain
-rw-r--r--lpc18xx-ccu.h2134logplain
-rw-r--r--lpc18xx-cgu.h1142logplain
-rw-r--r--lpc32xx-clock.h1633logplain
-rw-r--r--lsi,axm5516-clks.h974logplain
-rw-r--r--marvell,mmp2.h2022logplain
-rw-r--r--marvell,pxa168.h1654logplain
-rw-r--r--marvell,pxa1928.h1535logplain
-rw-r--r--marvell,pxa910.h1598logplain
-rw-r--r--maxim,max77620.h632logplain
-rw-r--r--maxim,max77686.h648logplain
-rw-r--r--maxim,max77802.h630logplain
-rw-r--r--meson8b-clkc.h523logplain
-rw-r--r--microchip,pic32-clock.h1150logplain
-rw-r--r--mpc512x-clock.h2236logplain
-rw-r--r--mt2701-clk.h13832logplain
-rw-r--r--mt8135-clk.h5641logplain
-rw-r--r--mt8173-clk.h9293logplain
-rw-r--r--oxsemi,ox810se.h1002logplain
-rw-r--r--oxsemi,ox820.h1203logplain
-rw-r--r--pistachio-clk.h4863logplain
-rw-r--r--pxa-clock.h1715logplain
-rw-r--r--qcom,gcc-apq8084.h12872logplain
-rw-r--r--qcom,gcc-ipq4019.h5423logplain
-rw-r--r--qcom,gcc-ipq806x.h8574logplain
-rw-r--r--qcom,gcc-mdm9615.h9497logplain
-rw-r--r--qcom,gcc-msm8660.h7932logplain
-rw-r--r--qcom,gcc-msm8916.h6190logplain
-rw-r--r--qcom,gcc-msm8960.h9342logplain
-rw-r--r--qcom,gcc-msm8974.h12340logplain
-rw-r--r--qcom,gcc-msm8994.h4858logplain
-rw-r--r--qcom,gcc-msm8996.h12575logplain
-rw-r--r--qcom,lcc-ipq806x.h899logplain
-rw-r--r--qcom,lcc-mdm9615.h1701logplain
-rw-r--r--qcom,lcc-msm8960.h1616logplain
-rw-r--r--qcom,mmcc-apq8084.h5722logplain
-rw-r--r--qcom,mmcc-msm8960.h4109logplain
-rw-r--r--qcom,mmcc-msm8974.h5223logplain
-rw-r--r--qcom,mmcc-msm8996.h9403logplain
-rw-r--r--qcom,rpmcc.h2101logplain
-rw-r--r--r7s72100-clock.h1218logplain
-rw-r--r--r8a73a4-clock.h1596logplain
-rw-r--r--r8a7740-clock.h1992logplain
-rw-r--r--r8a7743-cpg-mssr.h1269logplain
-rw-r--r--r8a7745-cpg-mssr.h1298logplain
-rw-r--r--r8a7778-clock.h1855logplain
-rw-r--r--r8a7779-clock.h1647logplain
-rw-r--r--r8a7790-clock.h4367logplain
-rw-r--r--r8a7791-clock.h4388logplain
-rw-r--r--r8a7792-clock.h2562logplain
-rw-r--r--r8a7793-clock.h4561logplain
-rw-r--r--r8a7794-clock.h3679logplain
-rw-r--r--r8a7795-cpg-mssr.h1890logplain
-rw-r--r--r8a7796-cpg-mssr.h2066logplain
-rw-r--r--renesas-cpg-mssr.h542logplain
-rw-r--r--rk1108-cru.h6605logplain
-rw-r--r--rk3036-cru.h4584logplain
-rw-r--r--rk3066a-cru.h1068logplain
-rw-r--r--rk3188-cru-common.h6105logplain
-rw-r--r--rk3188-cru.h1435logplain