#include #include #include #include #include #include #include #include #include #include "xenfs.h" #define XEN_KSYM_NAME_LEN 127 /* Hypervisor may have different name length */ struct xensyms { struct xen_platform_op op; char *name; uint32_t namelen; }; /* Grab next output page from the hypervisor */ static int xensyms_next_sym(struct xensyms *xs) { int ret; struct xenpf_symdata *symdata = &xs->op.u.symdata; uint64_t symnum; memset(xs->name, 0, xs->namelen); symdata->namelen = xs->namelen; symnum = symdata->symnum; ret = HYPERVISOR_platform_op(&xs->op); if (ret < 0) return ret; /* * If hypervisor's symbol didn't fit into the buffer then allocate * a larger buffer and try again. */ if (unlikely(symdata->namelen > xs->namelen)) { kfree(xs->name); xs->namelen = symdata->namelen; xs->name = kzalloc(xs->namelen, GFP_KERNEL); if (!xs->name) return -ENOMEM; set_xen_guest_handle(symdata->name, xs->name); symdata->symnum--; /* Rewind */ ret = HYPERVISOR_platform_op(&xs->op); if (ret < 0) return ret; } if (symdata->symnum == symnum) /* End of symbols */ return 1; return 0; } static void *xensyms_start(struct seq_file *m, loff_t *pos) { struct xensyms *xs = (struct xensyms *)m->private; xs->op.u.symdata.symnum = *pos; if (xensyms_next_sym(xs)) return NULL; return m->private; } static void *xensyms_next(struct seq_file *m, void *p, loff_t *pos) { struct xensyms *xs = (struct xensyms *)m->private; xs->op.u.symdata.symnum = ++(*pos); if (xensyms_next_sym(xs)) return NULL; return p; } static int xensyms_show(struct seq_file *m, void *p) { struct xensyms *xs = (struct xensyms *)m->private; struct xenpf_symdata *symdata = &xs->op.u.symdata; seq_printf(m, "%016llx %c %s\n", symdata->address, symdata->type, xs->name); return 0; } static void xensyms_stop(struct seq_file *m, void *p) { } static const struct seq_operations xensyms_seq_ops = { .start = xensyms_start, .next = xensyms_next, .show = xensyms_show, .stop = xensyms_stop, }; static int xensyms_open(struct inode *inode, struct file *file) { struct seq_file *m; struct xensyms *xs; int ret; ret = seq_open_private(file, &xensyms_seq_ops, sizeof(struct xensyms)); if (ret) return ret; m = file->private_data; xs = (struct xensyms *)m->private; xs->namelen = XEN_KSYM_NAME_LEN + 1; xs->name = kzalloc(xs->namelen, GFP_KERNEL); if (!xs->name) { seq_release_private(inode, file); return -ENOMEM; } set_xen_guest_handle(xs->op.u.symdata.name, xs->name); xs->op.cmd = XENPF_get_symbol; xs->op.u.symdata.namelen = xs->namelen; return 0; } static int xensyms_release(struct inode *inode, struct file *file) { struct seq_file *m = file->private_data; struct xensyms *xs = (struct xensyms *)m->private; kfree(xs->name); return seq_release_private(inode, file); } const struct file_operations xensyms_ops = { .open = xensyms_open, .read = seq_read, .llseek = seq_lseek, .release = xensyms_release }; /sctp/sm_statetable.c
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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2016-12-15 08:38:35 -0200
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-12-15 08:38:35 -0200
commit65390ea01ce678379da32b01f39fcfac4903f256 (patch)
tree7f849d66121533c331cf61136b124218d87cbf86 /net/sctp/sm_statetable.c
parente7aa8c2eb11ba69b1b69099c3c7bd6be3087b0ba (diff)
parentd183e4efcae8d88a2f252e546978658ca6d273cc (diff)
Merge branch 'patchwork' into v4l_for_linus
* patchwork: (496 commits) [media] v4l: tvp5150: Add missing break in set control handler [media] v4l: tvp5150: Don't inline the tvp5150_selmux() function [media] v4l: tvp5150: Compile tvp5150_link_setup out if !CONFIG_MEDIA_CONTROLLER [media] em28xx: don't store usb_device at struct em28xx [media] em28xx: use usb_interface for dev_foo() calls [media] em28xx: don't change the device's name [media] mn88472: fix chip id check on probe [media] mn88473: fix chip id check on probe [media] lirc: fix error paths in lirc_cdev_add() [media] s5p-mfc: Add support for MFC v8 available in Exynos 5433 SoCs [media] s5p-mfc: Rework clock handling [media] s5p-mfc: Don't keep clock prepared all the time [media] s5p-mfc: Kill all IS_ERR_OR_NULL in clocks management code [media] s5p-mfc: Remove dead conditional code [media] s5p-mfc: Ensure that clock is disabled before turning power off [media] s5p-mfc: Remove special clock rate management [media] s5p-mfc: Use printk_ratelimited for reporting ioctl errors [media] s5p-mfc: Set DMA_ATTR_ALLOC_SINGLE_PAGES [media] vivid: Set color_enc on HSV formats [media] v4l2-tpg: Init hv_enc field with a valid value ...
Diffstat (limited to 'net/sctp/sm_statetable.c')