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Use sysconf() by default instead of getpagesize(). getpagesize() still used if

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sysconf() not present. Since getpagesize is deprecated, it's only used as a
fallback.
This commit is contained in:
Ragnvald Maartmann-Moe IV 2003-07-18 12:18:05 +00:00
parent 9b63402f12
commit 810dfb29e6
1 changed files with 10 additions and 1 deletions
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11
libs/util/sys.c
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@ -201,6 +201,7 @@ Sys_PathType (const char *path)
free (comp); free (comp);
return type; return type;
} }
/* /*
Sys_SetPrintf Sys_SetPrintf
@ -339,12 +340,20 @@ Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
# ifdef HAVE_MPROTECT # ifdef HAVE_MPROTECT
int r; int r;
unsigned long endaddr = startaddr + length; unsigned long endaddr = startaddr + length;
# ifdef HAVE_UNISTD_H
long psize = sysconf (_SC_PAGESIZE);
# ifdef HAVE_GETPAGESIZE startaddr &= ~(psize - 1);
endaddr = (endaddr + psize - 1) & ~(psize -1);
# else
# ifdef HAVE_GETPAGESIZE
int psize = getpagesize (); int psize = getpagesize ();
startaddr &= ~(psize - 1); startaddr &= ~(psize - 1);
endaddr = (endaddr + psize - 1) & ~(psize - 1); endaddr = (endaddr + psize - 1) & ~(psize - 1);
# else
# error Unknown page size
# endif
# endif # endif
r = mprotect ((char *) startaddr, endaddr - startaddr, r = mprotect ((char *) startaddr, endaddr - startaddr,