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preload: Re-fix time64 redirects for glibc < 2.39.9 #243

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May 23, 2024
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preload: Re-fix time64 redirects for glibc < 2.39.9 #243

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9 changes: 9 additions & 0 deletions src/libumockdev-preload.c
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,15 @@ extern int __REDIRECT_NTH (__ttyname_r_alias, (int __fd, char *__buf,
#include "ioctl_tree.h"

#ifdef __GLIBC__

/* __USE_TIME64_REDIRECTS was introduced in glibc 2.39.9. With older releases we need to look at
* __USE_TIME_BITS64 instead, but the latter is always defined in 2.39.9 now. So make some guesswork
* and define the former when appropriate. */
#if !defined(__USE_TIME64_REDIRECTS) && defined(__USE_TIME_BITS64) && __TIMESIZE == 32
#pragma message "Defining backwards compatibility shim __USE_TIME64_REDIRECTS for glibc < 2.39.9"
#define __USE_TIME64_REDIRECTS 1
#endif

/* Fixup for making a mess with __REDIRECT above */
#ifdef __USE_TIME64_REDIRECTS
#define clock_gettime __clock_gettime64
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