Output defects can exist in sysfs content using sprintf and snprintf.
sprintf does not know the PAGE_SIZE maximum of the temporary buffer
used for outputting sysfs content and it's possible to overrun the
PAGE_SIZE buffer length.
Add a generic sysfs_emit function that knows that the size of the
temporary buffer and ensures that no overrun is done.
Add a generic sysfs_emit_at function that can be used in multiple
call situations that also ensures that no overrun is done.
V2: Add drivers core conversions
V3: Add a few more neatenings and conversions to drivers core
Add mm hugetlb_report_node_meminfo conversion
Joe Perches (8):
sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions
drivers core: Remove strcat uses around sysfs_emit and neaten
drivers core: Reindent a couple uses around sysfs_emit
drivers core: Miscellaneous changes for sysfs_emit
mm: and drivers core: Convert hugetlb_report_node_meminfo to sysfs_emit
drivers core: Use sysfs_emit for shared_cpu_map_show and shared_cpu_list_show
drivers core: node: Use a more typical macro definition style for ACCESS_ATTR
Documentation/filesystems/sysfs.rst | 8 +-
drivers/base/arch_topology.c | 2 +-
drivers/base/bus.c | 2 +-
drivers/base/cacheinfo.c | 49 ++--
drivers/base/class.c | 2 +-
drivers/base/core.c | 59 +++--
drivers/base/cpu.c | 84 ++++---
drivers/base/dd.c | 3 +-
drivers/base/devcoredump.c | 2 +-
drivers/base/firmware_loader/fallback.c | 4 +-
drivers/base/memory.c | 62 ++---
drivers/base/node.c | 306 ++++++++++++------------
drivers/base/platform.c | 17 +-
drivers/base/power/sysfs.c | 160 ++++++++-----
drivers/base/power/wakeup_stats.c | 17 +-
drivers/base/soc.c | 64 +++--
drivers/base/topology.c | 10 +-
fs/sysfs/file.c | 55 +++++
include/linux/hugetlb.h | 4 +-
include/linux/sysfs.h | 15 ++
mm/hugetlb.c | 18 +-
21 files changed, 532 insertions(+), 411 deletions(-)
--
2.26.0
