mbox series

[00/20] Manual replacement of all strlcpy in favor of strscpy

Message ID 20210222151231.22572-1-romain.perier@gmail.com
Headers show
Series Manual replacement of all strlcpy in favor of strscpy | expand

Message

Romain Perier Feb. 22, 2021, 3:12 p.m. UTC 
strlcpy() copy a C-String into a sized buffer, the result is always a
valid NULL-terminated that fits in the buffer, howerver it has severals
issues. It reads the source buffer first, which is dangerous if it is non
NULL-terminated or if the corresponding buffer is unbounded. Its safe
replacement is strscpy(), as suggested in the deprecated interface [1].

We plan to make this contribution in two steps:
- Firsly all cases of strlcpy's return value are manually replaced by the
  corresponding calls of strscpy() with the new handling of the return
  value (as the return code is different in case of error).
- Then all other cases are automatically replaced by using coccinelle.

This series covers manual replacements.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy

Romain Perier (20):
  cgroup: Manual replacement of the deprecated strlcpy() with return
    values
  crypto: Manual replacement of the deprecated strlcpy() with return
    values
  devlink: Manual replacement of the deprecated strlcpy() with return
    values
  dma-buf: Manual replacement of the deprecated strlcpy() with return
    values
  kobject: Manual replacement of the deprecated strlcpy() with return
    values
  ima: Manual replacement of the deprecated strlcpy() with return values
  SUNRPC: Manual replacement of the deprecated strlcpy() with return
    values
  kernfs: Manual replacement of the deprecated strlcpy() with return
    values
  m68k/atari: Manual replacement of the deprecated strlcpy() with return
    values
  module: Manual replacement of the deprecated strlcpy() with return
    values
  hwmon: Manual replacement of the deprecated strlcpy() with return
    values
  s390/hmcdrv: Manual replacement of the deprecated strlcpy() with
    return values
  scsi: zfcp: Manual replacement of the deprecated strlcpy() with return
    values
  target: Manual replacement of the deprecated strlcpy() with return
    values
  ALSA: usb-audio: Manual replacement of the deprecated strlcpy() with
    return values
  tracing/probe: Manual replacement of the deprecated strlcpy() with
    return values
  vt: Manual replacement of the deprecated strlcpy() with return values
  usb: gadget: f_midi: Manual replacement of the deprecated strlcpy()
    with return values
  usbip: usbip_host: Manual replacement of the deprecated strlcpy() with
    return values
  s390/watchdog: Manual replacement of the deprecated strlcpy() with
    return values

 arch/m68k/emu/natfeat.c                 |  6 +--
 crypto/lrw.c                            |  6 +--
 crypto/xts.c                            |  6 +--
 drivers/dma-buf/dma-buf.c               |  4 +-
 drivers/hwmon/pmbus/max20730.c          | 66 +++++++++++++------------
 drivers/s390/char/diag_ftp.c            |  4 +-
 drivers/s390/char/sclp_ftp.c            |  6 +--
 drivers/s390/scsi/zfcp_fc.c             |  8 +--
 drivers/target/target_core_configfs.c   | 33 ++++---------
 drivers/tty/vt/keyboard.c               |  5 +-
 drivers/usb/gadget/function/f_midi.c    |  4 +-
 drivers/usb/gadget/function/f_printer.c |  8 +--
 drivers/usb/usbip/stub_main.c           |  6 +--
 drivers/watchdog/diag288_wdt.c          | 12 +++--
 fs/kernfs/dir.c                         | 27 +++++-----
 kernel/cgroup/cgroup.c                  |  2 +-
 kernel/module.c                         |  4 +-
 kernel/trace/trace_uprobe.c             | 11 ++---
 lib/kobject_uevent.c                    |  6 +--
 net/core/devlink.c                      |  6 +--
 net/sunrpc/clnt.c                       |  6 ++-
 security/integrity/ima/ima_policy.c     |  8 ++-
 sound/usb/card.c                        |  4 +-
 23 files changed, 129 insertions(+), 119 deletions(-)