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* README-prereq: s_linux_GNU/Linux_ or s_linux_Linux kernel_
* README-valgrind: ditto
* src/chown-core.c: ditto
* src/dd.c: ditto
* src/df.c: ditto
* src/ls.c: ditto
* src/mv.c: ditto
* src/pwd.c: ditto
* src/remove.c: ditto
* src/shred.c: ditto
* src/stat.c: ditto
* src/su.c: ditto
* src/system.h: ditto
* src/timeout.c: ditto
* src/truncate.c: ditto
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* tests/dd/skip-seek-past-file: Just check for
the non system specific part of the error strings.
This was causing an erroneous failure on NetBSD 1.6 at least.
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* tests/dd/skip-seek-past-file: I had previously commented that
on some systems lseek(> max file size) may succeed, but left
the possibility of failure in that case, so that I could determine
specific systems to put in the comments for both failure modes.
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* src/dd.c: Add 2009 to list of copyright years.
* tests/dd/seek-skip-past-file: Likewise.
* tests/dd/seek-skip-past-dev: Likewise.
* m4/xattr.m4: Likewise.
* src/copy.h: Likewise.
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Following are the before and after operations for seekable files,
for the various erroneous offsets handled by this patch:
skip beyond end of file
before: immediately exit(0);
after : immediately printf("cannot skip to specified offset"); exit(0);
skip > max file size
before: read whole file and exit(0);
after : immediately printf("cannot skip: Invalid argument"); exit(1);
seek > max file size
before: immediately printf("truncate error: EFBIG"); exit(1);
after : immediately printf("truncate error: EFBIG"); exit(1);
skip > OFF_T_MAX
before: read whole device/file and exit(0);
after : immediately printf("cannot skip:"); exit(1);
seek > OFF_T_MAX
before: immediately printf("truncate error: offset too large"); exit(1);
after : immediately printf("truncate error: offset too large"); exit(1);
skip > device size
before: read whole device and exit(0);
after : immediately printf("cannot skip: Invalid argument"); exit(1);
seek > device size
before: read whole device and printf("write error: ENOSPC"); exit(1);
after : immediately printf("cannot seek: Invalid argument"); exit(1);
* NEWS: Summarize this change in behavior.
* src/dd.c (skip): Add error checking for large seek/skip offsets on
seekable files, rather than deferring to using read() to advance offset.
(dd_copy): Print a warning if skip past EOF, as per FIXME comment.
* test/Makefile.am: Add 2 new tests.
* tests/dd/seek-skip-past-file: Add tests for first 3 cases above.
* tests/dd/seek-skip-past-dev: Add root only test for last case above.
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