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- ptsname_r depends on UCLIBC_HAS_PTY just like ptsname()
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The obsolete functions bcopy, index, etc. are not supposed to be used within
uClibc itself. Hence, there is no libc_hidden_def for them, but the previous
patch did not just move libc_hidden_protos, it also added new ones for the
legacy functions. As a result, programs which use these functions can no
longer link with uClibc.
This fixes it by removing the unnecessary libc_hidden_protos. I've also
removed all inclusions of <strings.h> from uClibc source files: since we
define _GNU_SOURCE, it is sufficient to include <string.h>. We then do not
need to duplicate the libc_hidden_proto block in <strings.h>.
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like
o UCLIBC_HAS_GNU_ERROR
o UCLIBC_HAS_BSD_ERR
o UCLIBC_HAS_PTY
o UCLIBC_HAS_GETPT (1)
o UCLIBC_SYSCALL_STUBS
o UCLIBC_SYSCALL_STUB_WARNING
o UCLIBC_LINUX_SPECIFIC (2)
o UCLIBC_BSD_SPECIFIC (3)
o UCLIBC_NTP_LEGACY (4)
o UCLIBC_SV4_DEPRECATED (5)
o UCLIBC_HAVE_REALTIME (6)
o UCLIBC_HAVE_ADVANCED_REALTIME (7)
o UCLIBC_HAVE_EPOLL (8)
o UCLIBC_HAVE_XATTR (9)
o UCLIBC_HAVE_PROFILING (10)
(1) make non-standard getpt optional and implement standard posix_openpt
(2) fstatfs(), inotify_*(), ioperm(), iopl(), madvise(), modify_ldt(),
personality()
ppoll(), setresuid()
(3) mincore(), getdomainname(), setdomainname()
(4) ntp_adjtime(), ntp_gettime() aliases
(5) ustat() [use statfs(2) in your code instead]
(6) All marked as "(REALTIME)" in SUSv3
(7) All marked as "(ADVANCED REALTIME)" in SUSv3
(8) epoll_create(), epoll_ctl(), epoll_wait()
(9) all Extended Attributes
(10) helpers for gcc's -finstrument-functions
- Fixes _dl_exit()
- Implements sleep(3) for !UCLIBC_HAVE_REALTIME
- Implements usleep(3) for !UCLIBC_HAVE_REALTIME
- adds #warning about incorrect posix_fadvise{,64}()
- removes unused and unwanted uselib()
Net outcome is that an allnoconfig with HAVE_SHARED is now about 88k instead
of formerly 130k.
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(verified with objdump)
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Code size is not changed on i386.
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remove a few duplicate includes of unistd.h
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- 79 0 28 107 6b libc/inet/rpc/create_xid.o
+ 76 0 25 101 65 libc/inet/rpc/create_xid.o
- 126 0 4 130 82 libc/misc/assert/__assert.o
+ 123 0 1 124 7c libc/misc/assert/__assert.o
- 648 4 24 676 2a4 libc/misc/internals/__uClibc_main.o
+ 645 4 21 670 29e libc/misc/internals/__uClibc_main.o
- 230 0 4 234 ea libc/stdlib/abort.o
+ 216 0 1 217 d9 libc/stdlib/abort.o
- 129 0 4 133 85 libc/termios/tcgetsid.o
+ 126 0 1 127 7f libc/termios/tcgetsid.o
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in string.h and strings.h. This caught unguarded string ops in
libc/inet/ethers.c __ether_line_w() function.
I will wait for fallout reports for a week or so,
then continue converting more libc_hidden_proto's.
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(patch by Bernd Schmidt <bernds_cb1 at t-online.de>)
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In file included from toolchain_build_i386/gcc-3.4.6/libiberty/hashtab.c:49:
build_i386/staging_dir/i386-linux-uclibc/sys-include/malloc.h:193: error: ISO C forbids data definition with no type or storage class
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When no TIOCGPTN definition is present in the kernel headers, the library's ptsname() function will not work.
The libc/stdlib/ptsname_r.c file is the problem. This file includes a complicated nest of #if directives. One of these #if's has the opposite sense from what is required.
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reduction is achieved by direct use of user-supplied PATH_MAX sized
buffer for result (without intermediate copy) and changes
in copy_buf[] usage - now it is used for both "source" pathname
and link name (it works because they have to be less than PATH_MAX combined,
otherwise we return NULL).
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thus need to initialize stuff with 0 to force it into bss.
All hell can again break loose if future gcc will be smart enough
to ignore it.
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trigger a buffer overflow in that case
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Hi. I have found a bug in realpath that did not allow me to use it with
symlinks. Although I am using 0.9.28.1, the bug is present in 0.9.28 and
also in the trunk.
I attach a suggested patch. Please let me know if the solution is correct.
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However, retesting on m68k showed up a problem that had appeared in
uClibc since the last time I tried. Specifically, revision 15785 did:
-#define HEAP_GRANULARITY (sizeof (HEAP_GRANULARITY_TYPE))
+#define HEAP_GRANULARITY (__alignof__ (HEAP_GRANULARITY_TYPE))
-#define MALLOC_ALIGNMENT (sizeof (double))
+#define MALLOC_ALIGNMENT (__alignof__ (double))
The problem is that
(a) MALLOC_HEADER_SIZE == MALLOC_ALIGNMENT
(b) the header contains a size value of type size_t
(c) sizeof (size_t) is 4 on m68k, but...
(d) __alignof__ (double) is only 2 (the largest alignment used on m68k)
So we only allocate 2 bytes for the 4-byte header, and the least
significant 2 bytes of the size are in the user's area rather than
the header. The patch below fixes that problem by redefining
MALLOC_HEADER_SIZE to:
MAX (MALLOC_ALIGNMENT, sizeof (size_t))
(but without the help of the MAX macro ;)). However, we really would
like to have word alignment on Coldfire. It makes a big performance
difference, and because we have to allocate a 4-byte header anyway,
what wastage there is will be confined to the end of the allocated block.
Any wastage will also be limited to 2 bytes per allocation compared to
the current alignment.
I've therefore used the __aligned__ type attribute to create a double
type that has at least sizeof (size_t) bytes of alignment. I've
introduced a new __attribute_aligned__ macro for this. It might seem
silly protecting against old or non-GNU compilers here, but the extra
alignment is only an optimisation, and having the macro is more in the
spirit of the other attribute code.
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does not easily lend itself to becoming complete pthread cancelation
safe without first investing in some deep and serious thought...
The other malloc implementations are pthread cancelation safe, and
this one is mostly used for uClinux, where the lack is at least less
likely to be a common problem.
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things, and avoid potential deadlocks caused when a thread holding a uClibc
internal lock get canceled and terminates without releasing the lock. This
change also provides a single place, bits/uClibc_mutex.h, for thread libraries
to modify to change all instances of internal locking.
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things, and avoid potential deadlocks caused when a thread holding a uClibc
internal lock get canceled and terminates without releasing the lock. This
change also provides a single place, bits/uClibc_mutex.h, for thread libraries
to modify to change all instances of internal locking.
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furthermore ifdef'ed out anyway.
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Also make compilation conditional on float support.
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bernds writes: Use __alignof__ instead of sizeof to get alignments. Eliminates some warnings about misalignments when malloc debugging is enabled.
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I had clearly run search/replace on that were cluttering things up.
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I had clearly run search/replace on that were cluttering things up.
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_ISOC99/XOPEN_SOURCE
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regardless of the setting of MALLOC_GLIBC_COMPAT.
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most of global data relocations are back
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prototypes. Should I do all the other *max aliases as well
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