| Commit message (Collapse) | Author | Age | Files | Lines |
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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The goal is to avoid duplicate code in path.c and sysfs.c and make it
possible to define prefix for paths for all sysfs and procfs based
utils. Now we have /proc snapshots (for tests) for lscpu only. It
would be nice to have the same (for sysfs) for lsblk and another tools.
* very simple API to read numbers, strings and symlinks
* based on openat()
pc = ul_new_path("/sys/block/sda");
ul_path_read_u64(pc, &size, "size");
ul_path_read_u64(pc, &lsz, "queue/logical_block_size");
* printf-like API to generate paths, for example:
ul_path_readf_u64(pc, &num, "sda%d/size", partno)
* allow to define prefix to redirect hardcoded paths to another
location, for example:
pc = ul_new_path("/sys/block/sda");
ul_path_set_prefix(pc, "/my/regression/dump");
ul_path_read_u64(pc, &num, "size");
to read /my/regression/dump/sys/block/sda/size
* allow to extend the API by "dialects", for example for sysfs:
pc = ul_new_path(NULL);
sysfs_blkdev_init_path(pc, devno, NULL);
and use ul_path_* functions to read from @pc initialized by
sysfs_blkdev_init_path()
* add test_path binary
Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Simply avoiding strdup(). Error handling improved.
This was the Clang Analyzer warning:
Memory Error, Use-after-free
sys-utils/lsmem.c:259:3: warning: Use of memory after it is freed
err(EXIT_FAILURE, _("Failed to open %s"), path);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
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Before:
$ lscpu -s "$(tr '\0' 'x' < /dev/zero | head -c 10000)"
Segmentation fault (core dumped)
After:
$ lscpu -s "$(tr '\0' 'x' < /dev/zero | head -c 10000)"
lscpu: invalid argument to --sysroot: File name too long
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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... and to have names compatible with lib/sysfs.c
Signed-off-by: Karel Zak <kzak@redhat.com>
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- make taskset depend on cpu_set_t
- make cpuset.c optional for libcommon and lib/path.c
Signed-off-by: Karel Zak <kzak@redhat.com>
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Use the common path access functions. In order to simplify chcpu also implement
and use path_writestr() which writes a string to the path specified.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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A couple of these functions already have been copied to chcpu.c,
so it makes sense to move these functions into an own file.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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