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Linux: Fix fcntl, ioctl, prctl redirects for _TIME_BITS=64 (bug 28182)

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__REDIRECT and __THROW are not compatible with C++ due to the ordering of the
__asm__ alias and the throw specifier. __REDIRECT_NTH has to be used
instead.

Fixes commit 8a40aff86b ("io: Add time64 alias
for fcntl"), commit 82c395d91e ("misc: Add
time64 alias for ioctl"), commit b39ffab860
("Linux: Add time64 alias for prctl").

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit c87fcacc50)
This commit is contained in:
Florian Weimer 2021-08-06 09:51:38 +02:00
parent 9995d0588f
commit 31902ae639
4 changed files with 14 additions and 7 deletions
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7
NEWS
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@ -4,6 +4,13 @@ See the end for copying conditions.
Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
using `glibc' in the "product" field.
Version 2.34.1
The following bugs are resolved with this release:
[28182] _TIME_BITS=64 in C++ has issues with fcntl, ioctl, prctl
Version 2.34

8
io/fcntl.h
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@ -187,10 +187,10 @@ extern int fcntl64 (int __fd, int __cmd, ...);
# endif
#else /* __USE_TIME_BITS64 */
# ifdef __REDIRECT
extern int __REDIRECT (fcntl, (int __fd, int __request, ...),
__fcntl_time64) __THROW;
extern int __REDIRECT (fcntl64, (int __fd, int __request, ...),
__fcntl_time64) __THROW;
extern int __REDIRECT_NTH (fcntl, (int __fd, int __request, ...),
__fcntl_time64);
extern int __REDIRECT_NTH (fcntl64, (int __fd, int __request, ...),
__fcntl_time64);
# else
extern int __fcntl_time64 (int __fd, int __request, ...) __THROW;
# define fcntl64 __fcntl_time64

4
misc/sys/ioctl.h
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@ -42,8 +42,8 @@ __BEGIN_DECLS
extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
#else
# ifdef __REDIRECT
extern int __REDIRECT (ioctl, (int __fd, unsigned long int __request, ...),
__ioctl_time64) __THROW;
extern int __REDIRECT_NTH (ioctl, (int __fd, unsigned long int __request, ...),
__ioctl_time64);
# else
extern int __ioctl_time64 (int __fd, unsigned long int __request, ...) __THROW;
# define ioctl __ioctl_time64

2
sysdeps/unix/sysv/linux/sys/prctl.h
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@ -42,7 +42,7 @@ __BEGIN_DECLS
extern int prctl (int __option, ...) __THROW;
#else
# ifdef __REDIRECT
extern int __REDIRECT (prctl, (int __option, ...), __prctl_time64) __THROW;
extern int __REDIRECT_NTH (prctl, (int __option, ...), __prctl_time64);
# else
extern int __prctl_time64 (int __option,d ...) __THROW;
# define ioctl __prctl_time64