Commit Graph

6 Commits

Author SHA1 Message Date
Jan Höppner
5a9b56f814 lscss: Fix email address
The linux.vnet.ibm.com addresses will be become disfunct by eoy.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2018-10-31 11:44:17 +01:00
Sebastian Ott
57b992ffa1 lscss: document behavior of subchannels bound to alternate drivers
Provide information on how subchannels bound to vfio_ccw are displayed.

Reported-by: Cornelia Huck <cohuck@redhat.com>
Link: https://github.com/ibm-s390-tools/s390-tools/issues/32
Fixes: #32
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2018-08-10 12:41:17 +02:00
Sebastian Ott
33a17df9fc lscss: fix scanning for defunct devices
util_scandir doesn't work with "/" at the end of the format string.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2018-05-07 13:42:03 +02:00
Sebastian Ott
4ff7aeff39 lscss: fix double free in print_defunct_devices
double free or corruption (out)

Program received signal SIGABRT, Aborted.
0x000003fffdd40404 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x000003fffdd40404 in raise () from /lib64/libc.so.6
#1  0x000003fffdd41ec2 in abort () from /lib64/libc.so.6
#2  0x000003fffdd88d8e in __libc_message () from /lib64/libc.so.6
#3  0x000003fffdd905c8 in malloc_printerr () from /lib64/libc.so.6
#4  0x000003fffdd98dfa in free () from /lib64/libc.so.6
#5  0x0000000001005994 in util_ptr_vec_free (count=<optimized out>, ptr_vec=0x101de90) at ../include/lib/util_base.h:46
#6  util_scandir_free (de_vec=0x101de90, count=<optimized out>) at util_scandir.c:174
#7  0x00000000010043ce in print_defunct_devices (rec=rec@entry=0x10114f0,
    path=path@entry=0x101cc80 "/sys/devices/css0/defunct") at lscss.c:678
#8  0x0000000001004cfe in print_subchannels_of_type (type_requested=type_requested@entry=SUBCHANNEL_TYPE_IO,
    rec=rec@entry=0x10114f0) at lscss.c:726
#9  0x0000000001003888 in cmd_lscss () at lscss.c:761
#10 main (argc=<optimized out>, argv=<optimized out>) at lscss.c:932

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
2018-05-07 13:42:03 +02:00
Michael Holzheu
8ff6af3a4b lscss: Get rid of gcc 7 buffer truncation warnings
With gcc 7 we get warnings for code like the following:

  44 #define MAX_BUFFER_SIZE_FOR_SUBCHANNEL_ATTRIBUTES      37
 406         char buf[MAX_BUFFER_SIZE_FOR_SUBCHANNEL_ATTRIBUTES];
 416                 device = de_vec[0]->d_name;
 417                 snprintf(buf, sizeof(buf), "%s", device);

 $ grep -r 'd_name\[' /usr/include/
 /usr/include/bits/dirent.h:    char d_name[256];

The compiler assumes that d_name can be up to 255 characters. Therefore
it produces the following warning:

   CC      zconf/css/lscss.o
 lscss.c: In function 'print_sch_io':
 lscss.c:417:31: warning: '%s' directive output may be truncated writing
    up to 255 bytes into a region of size 37 [-Wformat-truncation=]
    snprintf(buf, sizeof(buf), "%s", device);
                               ^~
 In file included from /usr/include/stdio.h:936:0,
                  from lscss.c:10:
 /usr/include/bits/stdio2.h:64:10: note: '__builtin_snprintf' output
                    between 1 and 256 bytes into a destination of size 37
    return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         __bos (__s), __fmt, __va_arg_pack ());
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fix this and use larger buffer sizes to keep gcc quiet.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
2017-09-06 13:05:12 +02:00
Michael Holzheu
b627b8d8e1 Initial s390-tools-2.0.0 import
This commit is based on the s390-tools-1.39.0 version.

Changes on top of s390-tools-1.39.0:

 - Add MIT license to all source files
 - Add LICENSE file
 - Transform REAMDE to README.md (markdown)
 - Add AUTHORS.md file
 - Add CONTRIBUTING.md file
 - Move changelog from README to CHANGELOG.md file

Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
2017-08-21 10:55:40 +02:00