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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /fs/ceph/util.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'fs/ceph/util.c')
-rw-r--r--fs/ceph/util.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/fs/ceph/util.c b/fs/ceph/util.c
new file mode 100644
index 000000000..2c3487567
--- /dev/null
+++ b/fs/ceph/util.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Some non-inline ceph helpers
+ */
+#include <linux/module.h>
+#include <linux/ceph/types.h>
+
+/*
+ * return true if @layout appears to be valid
+ */
+int ceph_file_layout_is_valid(const struct ceph_file_layout *layout)
+{
+ __u32 su = layout->stripe_unit;
+ __u32 sc = layout->stripe_count;
+ __u32 os = layout->object_size;
+
+ /* stripe unit, object size must be non-zero, 64k increment */
+ if (!su || (su & (CEPH_MIN_STRIPE_UNIT-1)))
+ return 0;
+ if (!os || (os & (CEPH_MIN_STRIPE_UNIT-1)))
+ return 0;
+ /* object size must be a multiple of stripe unit */
+ if (os < su || os % su)
+ return 0;
+ /* stripe count must be non-zero */
+ if (!sc)
+ return 0;
+ return 1;
+}
+
+void ceph_file_layout_from_legacy(struct ceph_file_layout *fl,
+ struct ceph_file_layout_legacy *legacy)
+{
+ fl->stripe_unit = le32_to_cpu(legacy->fl_stripe_unit);
+ fl->stripe_count = le32_to_cpu(legacy->fl_stripe_count);
+ fl->object_size = le32_to_cpu(legacy->fl_object_size);
+ fl->pool_id = le32_to_cpu(legacy->fl_pg_pool);
+ if (fl->pool_id == 0 && fl->stripe_unit == 0 &&
+ fl->stripe_count == 0 && fl->object_size == 0)
+ fl->pool_id = -1;
+}
+
+void ceph_file_layout_to_legacy(struct ceph_file_layout *fl,
+ struct ceph_file_layout_legacy *legacy)
+{
+ legacy->fl_stripe_unit = cpu_to_le32(fl->stripe_unit);
+ legacy->fl_stripe_count = cpu_to_le32(fl->stripe_count);
+ legacy->fl_object_size = cpu_to_le32(fl->object_size);
+ if (fl->pool_id >= 0)
+ legacy->fl_pg_pool = cpu_to_le32(fl->pool_id);
+ else
+ legacy->fl_pg_pool = 0;
+}
+
+int ceph_flags_to_mode(int flags)
+{
+ int mode;
+
+#ifdef O_DIRECTORY /* fixme */
+ if ((flags & O_DIRECTORY) == O_DIRECTORY)
+ return CEPH_FILE_MODE_PIN;
+#endif
+
+ switch (flags & O_ACCMODE) {
+ case O_WRONLY:
+ mode = CEPH_FILE_MODE_WR;
+ break;
+ case O_RDONLY:
+ mode = CEPH_FILE_MODE_RD;
+ break;
+ case O_RDWR:
+ case O_ACCMODE: /* this is what the VFS does */
+ mode = CEPH_FILE_MODE_RDWR;
+ break;
+ }
+#ifdef O_LAZY
+ if (flags & O_LAZY)
+ mode |= CEPH_FILE_MODE_LAZY;
+#endif
+
+ return mode;
+}
+
+int ceph_caps_for_mode(int mode)
+{
+ int caps = CEPH_CAP_PIN;
+
+ if (mode & CEPH_FILE_MODE_RD)
+ caps |= CEPH_CAP_FILE_SHARED |
+ CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE;
+ if (mode & CEPH_FILE_MODE_WR)
+ caps |= CEPH_CAP_FILE_EXCL |
+ CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER |
+ CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL |
+ CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
+ if (mode & CEPH_FILE_MODE_LAZY)
+ caps |= CEPH_CAP_FILE_LAZYIO;
+
+ return caps;
+}