linux - Contrib clone of linux

Age	Commit message (Expand)	Author
2017-02-01	fs/binfmt: Convert obsolete cputime type to nsecs	Frederic Weisbecker
2014-03-04	binfmt_elf: add ELF_HWCAP2 to compat auxv entries	Ard Biesheuvel
2012-10-06	coredump: extend core dump note section to contain file names of mapped files	Denys Vlasenko
2012-10-06	coredump: add a new elf note with siginfo of the signal	Denys Vlasenko
2010-03-06	elf coredump: replace ELF_CORE_EXTRA_* macros by functions	Daisuke HATAYAMA
2008-01-30	x86: compat_binfmt_elf	Roland McGrath

/* * SCLP OCF communication parameters sysfs interface * * Copyright IBM Corp. 2011 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> */ #define KMSG_COMPONENT "sclp_ocf" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #include <linux/kernel.h> #include <linux/init.h> #include <linux/stat.h> #include <linux/device.h> #include <linux/string.h> #include <linux/ctype.h> #include <linux/kmod.h> #include <linux/timer.h> #include <linux/err.h> #include <asm/ebcdic.h> #include <asm/sclp.h> #include "sclp.h" #define OCF_LENGTH_HMC_NETWORK 8UL #define OCF_LENGTH_CPC_NAME 8UL static char hmc_network[OCF_LENGTH_HMC_NETWORK + 1]; static char cpc_name[OCF_LENGTH_CPC_NAME]; /* in EBCDIC */ static DEFINE_SPINLOCK(sclp_ocf_lock); static struct work_struct sclp_ocf_change_work; static struct kset *ocf_kset; static void sclp_ocf_change_notify(struct work_struct *work) { kobject_uevent(&ocf_kset->kobj, KOBJ_CHANGE); } /* Handler for OCF event. Look for the CPC image name. */ static void sclp_ocf_handler(struct evbuf_header *evbuf) { struct gds_vector *v; struct gds_subvector *sv, *netid, *cpc; size_t size; /* Find the 0x9f00 block. */ v = sclp_find_gds_vector(evbuf + 1, (void *) evbuf + evbuf->length, 0x9f00); if (!v) return; /* Find the 0x9f22 block inside the 0x9f00 block. */ v = sclp_find_gds_vector(v + 1, (void *) v + v->length, 0x9f22); if (!v) return; /* Find the 0x81 block inside the 0x9f22 block. */ sv = sclp_find_gds_subvector(v + 1, (void *) v + v->length, 0x81); if (!sv) return; /* Find the 0x01 block inside the 0x81 block. */ netid = sclp_find_gds_subvector(sv + 1, (void *) sv + sv->length, 1); /* Find the 0x02 block inside the 0x81 block. */ cpc = sclp_find_gds_subvector(sv + 1, (void *) sv + sv->length, 2); /* Copy network name and cpc name. */ spin_lock(&sclp_ocf_lock); if (netid) { size = min(OCF_LENGTH_HMC_NETWORK, (size_t) netid->length); memcpy(hmc_network, netid + 1, size); EBCASC(hmc_network, size); hmc_network[size] = 0; } if (cpc) { size = min(OCF_LENGTH_CPC_NAME, (size_t) cpc->length); memset(cpc_name, 0, OCF_LENGTH_CPC_NAME); memcpy(cpc_name, cpc + 1, size); } spin_unlock(&sclp_ocf_lock); schedule_work(&sclp_ocf_change_work); } static struct sclp_register sclp_ocf_event = { .receive_mask = EVTYP_OCF_MASK, .receiver_fn = sclp_ocf_handler, }; void sclp_ocf_cpc_name_copy(char *dst) { spin_lock_irq(&sclp_ocf_lock); memcpy(dst, cpc_name, OCF_LENGTH_CPC_NAME); spin_unlock_irq(&sclp_ocf_lock); } EXPORT_SYMBOL(sclp_ocf_cpc_name_copy); static ssize_t cpc_name_show(struct kobject *kobj, struct kobj_attribute *attr, char *page) { char name[OCF_LENGTH_CPC_NAME + 1]; sclp_ocf_cpc_name_copy(name); name[OCF_LENGTH_CPC_NAME] = 0; EBCASC(name, OCF_LENGTH_CPC_NAME); return snprintf(page, PAGE_SIZE, "%s\n", name); } static struct kobj_attribute cpc_name_attr = __ATTR(cpc_name, 0444, cpc_name_show, NULL); static ssize_t hmc_network_show(struct kobject *kobj, struct kobj_attribute *attr, char *page) { int rc; spin_lock_irq(&sclp_ocf_lock); rc = snprintf(page, PAGE_SIZE, "%s\n", hmc_network); spin_unlock_irq(&sclp_ocf_lock); return rc; } static struct kobj_attribute hmc_network_attr = __ATTR(hmc_network, 0444, hmc_network_show, NULL); static struct attribute *ocf_attrs[] = { &cpc_name_attr.attr, &hmc_network_attr.attr, NULL, }; static struct attribute_group ocf_attr_group = { .attrs = ocf_attrs, }; static int __init ocf_init(void) { int rc; INIT_WORK(&sclp_ocf_change_work, sclp_ocf_change_notify); ocf_kset = kset_create_and_add("ocf", NULL, firmware_kobj); if (!ocf_kset) return -ENOMEM; rc = sysfs_create_group(&ocf_kset->kobj, &ocf_attr_group); if (rc) { kset_unregister(ocf_kset); return rc; } return sclp_register(&sclp_ocf_event); } device_initcall(ocf_init);