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Correctly handle __fcntl_compat symbol for the !SYSCALL_COMPAT case.
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(or loading a dso linked to libthr.so into process which was not
linked against threading library).
MFC r276630:
Remove interposing, fix malloc, reinstall signal handlers wrappers on
libthr load.
MFC r276681:
Avoid calling internal libc function through PLT or accessing data
though GOT.
MFC r277032:
Reduce the size of the interposing table and amount of
cancellation-handling code in the libthr.
MFC note:
r276646 ("do not erronously export 'openat' symbol from rtld") is not
applicable to stable/10 yet, since PATHFDS support was not merged.
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Append '__' prefix to the tag of struct oflock, and put it under BSD
namespace. Structure is needed both by libc and kernel, thus cannot be
hidden under #ifdef _KERNEL.
Move a set of non-standard F_* and O_* constants into BSD namespace.
SUSv4 explicitely allows implemenation to pollute F_* and O_* names
after fcntl.h is included, but it costs us nothing to adhere
to the specification if exact POSIX compliance level is requested by
user code.
Change some spaces after #define to tabs.
Noted by and discussed with: bde
MFC after: 1 week
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so that they get the benefit of the (limited) forward ABI compatibility.
MFC after: 1 week
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MFC after: 2 days
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struct flock with l_sysid member can work properly on an an old kernel which
doesn't support l_sysid.
Sponsored by: Isilon Systems
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