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Signed-off-by: izxl007 <zeng.zheng@zte.com.cn>
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In order to use the fuse_fill_dir_t function in a C++ program, add the enum item:
FUSE_FILL_DIR_DEFAULTS
Without this change g++ compilation failed with
example/hello.c:94:35: error: invalid conversion from ‘int’ to ‘fuse_fill_dir_flags’ [-fpermissive]
94 | filler(buf, ".", NULL, 0, 0);
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As noticed by valgrind in issue #907 example/poll.c
triggers a use-after-free
==85200== Thread 2:
==85200== Invalid read of size 4
==85200== at 0x485E54A: send_notify_iov (fuse_lowlevel.c:2267)
==85200== by 0x485E54A: fuse_lowlevel_notify_poll (fuse_lowlevel.c:2289)
==85200== by 0x1096F2: fsel_producer (poll.c:245)
==85200== by 0x4897EA6: start_thread (pthread_create.c:477)
==85200== by 0x49ADA6E: clone (clone.S:95)
==85200== Address 0x5291d68 is 392 bytes inside a block of size 920 free'd
==85200== at 0x48399AB: free (vg_replace_malloc.c:538)
==85200== by 0x485A12C: fuse_destroy (fuse.c:5103)
==85200== by 0x486220F: fuse_main_real (helper.c:389)
==85200== by 0x1091D6: main (poll.c:288)
==85200== Block was alloc'd at
==85200== at 0x483AB65: calloc (vg_replace_malloc.c:760)
==85200== by 0x485BAA0: fuse_session_new (fuse_lowlevel.c:3036)
==85200== by 0x4859AF2: fuse_new@@FUSE_3.1 (fuse.c:4966)
==85200== by 0x4862129: fuse_main_real (helper.c:345)
==85200== by 0x1091D6: main (poll.c:288)
Issue is that the "fsel_producer" thread is still active after
fuse_destroy - it gets destructed too late.
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This addresses: https://github.com/libfuse/libfuse/issues/724
HAVE_LIBC_VERSIONED_SYMBOLS configures the library if to use
versioned symbols and is set at meson configuration time.
External filesystems (the main target, actually)
include fuse headers and the preprocessor
then acts on HAVE_LIBC_VERSIONED_SYMBOLS. Problem was now that
'config.h' was not distributed with libfuse and so
HAVE_LIBC_VERSIONED_SYMBOLS was never defined with external
tools and the preprocessor did the wrong decision.
This commit also increases the the minimal meson version,
as this depends on meson feature only available in 0.50
<quote 'meson' >
WARNING: Project specifies a minimum meson_
version '>= 0.42' but uses features which were added
in newer versions:
* 0.50.0: {'install arg in configure_file'}
</quote>
Additionally the config file has been renamed to "fuse_config.h"
to avoid clashes - 'config.h' is not very specific.
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IN a bunch of comments we say 'under the terms of the GNU GPL', make
it clear this is GPLv2 (as LICENSE says).
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Fixes: #81.
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This obsoletes the ftruncate & fgetattr handlers.
Fixes #58.
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The new names should make it more obvious at first glance
what each example demonstrates.
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