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Portability improvements to nasm_realpath()

Browse source 
Try harder to nasm_realpath() to be as portable as possible.  Move it
to a separate file since it has gotten complex enough that it is
cleaner that way.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2016-01-26 12:01:34 -08:00
parent 3115e789d6
commit 4627e695a5
8 changed files with 201 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
Makefile.in
View file

@ -74,6 +74,7 @@ endif
#-- Begin File Lists --#
NASM = nasm.$(O) nasmlib.$(O) ver.$(O) \
raa.$(O) saa.$(O) rbtree.$(O) \
realpath.$(O) \
float.$(O) insnsa.$(O) insnsb.$(O) \
directiv.$(O) \
assemble.$(O) labels.$(O) hashtbl.$(O) crc64.$(O) parser.$(O) \
@ -84,15 +85,16 @@ NASM = nasm.$(O) nasmlib.$(O) ver.$(O) \
output/outelfx32.$(O) \
output/outobj.$(O) output/outas86.$(O) output/outrdf2.$(O) \
output/outdbg.$(O) output/outieee.$(O) output/outmac32.$(O) \
output/outmac64.$(O) preproc.$(O) quote.$(O) pptok.$(O) \
output/outmac64.$(O) \
md5c.$(O) output/codeview.$(O) \
preproc.$(O) quote.$(O) pptok.$(O) \
macros.$(O) listing.$(O) eval.$(O) exprlib.$(O) stdscan.$(O) \
strfunc.$(O) tokhash.$(O) regvals.$(O) regflags.$(O) \
ilog2.$(O) \
lib/strlcpy.$(O) \
preproc-nop.$(O) \
disp8.$(O) \
iflag.$(O) \
md5c.$(O) output/codeview.$(O)
iflag.$(O)
NDISASM = ndisasm.$(O) disasm.$(O) sync.$(O) nasmlib.$(O) ver.$(O) \
insnsd.$(O) insnsb.$(O) insnsn.$(O) regs.$(O) regdis.$(O) \
@ -343,6 +345,7 @@ listing.$(O): listing.c compiler.h config.h directiv.h insnsi.h listing.h \
macros.$(O): macros.c compiler.h config.h directiv.h hashtbl.h insnsi.h \
nasm.h nasmlib.h opflags.h output/outform.h pptok.h preproc.h regs.h \
tables.h
md5c.$(O): md5c.c md5.h
nasm.$(O): nasm.c assemble.h compiler.h config.h directiv.h eval.h float.h \
iflag.h iflaggen.h insns.h insnsi.h labels.h listing.h nasm.h nasmlib.h \
opflags.h output/outform.h parser.h pptok.h preproc.h raa.h regs.h saa.h \
@ -353,6 +356,9 @@ nasmlib.$(O): nasmlib.c compiler.h config.h directiv.h iflag.h iflaggen.h \
ndisasm.$(O): ndisasm.c compiler.h config.h directiv.h disasm.h iflag.h \
iflaggen.h insns.h insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h \
regs.h sync.h tables.h tokens.h
output/codeview.$(O): output/codeview.c compiler.h config.h directiv.h \
insnsi.h md5.h nasm.h nasmlib.h opflags.h output/outlib.h output/pecoff.h \
pptok.h preproc.h regs.h saa.h tables.h version.h
output/nulldbg.$(O): output/nulldbg.c compiler.h config.h directiv.h \
insnsi.h nasm.h nasmlib.h opflags.h output/outlib.h pptok.h preproc.h \
regs.h tables.h
@ -423,6 +429,9 @@ preproc.$(O): preproc.c compiler.h config.h directiv.h eval.h hashtbl.h \
quote.$(O): quote.c compiler.h config.h nasmlib.h quote.h
raa.$(O): raa.c compiler.h config.h nasmlib.h raa.h
rbtree.$(O): rbtree.c compiler.h config.h rbtree.h
realpath.$(O): realpath.c compiler.h config.h directiv.h iflag.h iflaggen.h \
insns.h insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h \
tables.h tokens.h
regdis.$(O): regdis.c regdis.h regs.h
regflags.$(O): regflags.c compiler.h config.h directiv.h insnsi.h nasm.h \
nasmlib.h opflags.h pptok.h preproc.h regs.h tables.h

18
Mkfiles/msvc.mak
View file

@ -25,7 +25,8 @@ CC = cl
LD = link
CFLAGS = $(CFLAGS) /W2
BUILD_CFLAGS = $(CFLAGS) /I$(srcdir)/inttypes
INTERNAL_CFLAGS = /I$(srcdir) /I. /DHAVE__SNPRINTF /DHAVE__VSNPRINTF
INTERNAL_CFLAGS = /I$(srcdir) /I. \
/DHAVE__SNPRINTF /DHAVE__VSNPRINTF /DHAVE__FULLPATH
ALL_CFLAGS = $(BUILD_CFLAGS) $(INTERNAL_CFLAGS)
LDFLAGS = $(LDFLAGS) /SUBSYSTEM:CONSOLE
LIBS =
@ -44,6 +45,7 @@ X = .exe
# Edit in Makefile.in, not here!
NASM = nasm.$(O) nasmlib.$(O) ver.$(O) \
raa.$(O) saa.$(O) rbtree.$(O) \
realpath.$(O) \
float.$(O) insnsa.$(O) insnsb.$(O) \
directiv.$(O) \
assemble.$(O) labels.$(O) hashtbl.$(O) crc64.$(O) parser.$(O) \
@ -54,15 +56,16 @@ NASM = nasm.$(O) nasmlib.$(O) ver.$(O) \
output/outelfx32.$(O) \
output/outobj.$(O) output/outas86.$(O) output/outrdf2.$(O) \
output/outdbg.$(O) output/outieee.$(O) output/outmac32.$(O) \
output/outmac64.$(O) preproc.$(O) quote.$(O) pptok.$(O) \
output/outmac64.$(O) \
md5c.$(O) output/codeview.$(O) \
preproc.$(O) quote.$(O) pptok.$(O) \
macros.$(O) listing.$(O) eval.$(O) exprlib.$(O) stdscan.$(O) \
strfunc.$(O) tokhash.$(O) regvals.$(O) regflags.$(O) \
ilog2.$(O) \
lib/strlcpy.$(O) \
preproc-nop.$(O) \
disp8.$(O) \
iflag.$(O) \
md5c.$(O) output/codeview.$(O)
iflag.$(O)
NDISASM = ndisasm.$(O) disasm.$(O) sync.$(O) nasmlib.$(O) ver.$(O) \
insnsd.$(O) insnsb.$(O) insnsn.$(O) regs.$(O) regdis.$(O) \
@ -263,6 +266,7 @@ listing.$(O): listing.c compiler.h directiv.h insnsi.h listing.h nasm.h \
nasmlib.h opflags.h pptok.h preproc.h regs.h tables.h
macros.$(O): macros.c compiler.h directiv.h hashtbl.h insnsi.h nasm.h \
nasmlib.h opflags.h output/outform.h pptok.h preproc.h regs.h tables.h
md5c.$(O): md5c.c md5.h
nasm.$(O): nasm.c assemble.h compiler.h directiv.h eval.h float.h iflag.h \
iflaggen.h insns.h insnsi.h labels.h listing.h nasm.h nasmlib.h opflags.h \
output/outform.h parser.h pptok.h preproc.h raa.h regs.h saa.h stdscan.h \
@ -273,6 +277,9 @@ nasmlib.$(O): nasmlib.c compiler.h directiv.h iflag.h iflaggen.h insns.h \
ndisasm.$(O): ndisasm.c compiler.h directiv.h disasm.h iflag.h iflaggen.h \
insns.h insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h sync.h \
tables.h tokens.h
output/codeview.$(O): output/codeview.c compiler.h directiv.h insnsi.h md5.h \
nasm.h nasmlib.h opflags.h output/outlib.h output/pecoff.h pptok.h \
preproc.h regs.h saa.h tables.h version.h
output/nulldbg.$(O): output/nulldbg.c compiler.h directiv.h insnsi.h nasm.h \
nasmlib.h opflags.h output/outlib.h pptok.h preproc.h regs.h tables.h
output/nullout.$(O): output/nullout.c compiler.h directiv.h insnsi.h nasm.h \
@ -337,6 +344,9 @@ preproc.$(O): preproc.c compiler.h directiv.h eval.h hashtbl.h insnsi.h \
quote.$(O): quote.c compiler.h nasmlib.h quote.h
raa.$(O): raa.c compiler.h nasmlib.h raa.h
rbtree.$(O): rbtree.c compiler.h rbtree.h
realpath.$(O): realpath.c compiler.h directiv.h iflag.h iflaggen.h insns.h \
insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h tables.h \
tokens.h
regdis.$(O): regdis.c regdis.h regs.h
regflags.$(O): regflags.c compiler.h directiv.h insnsi.h nasm.h nasmlib.h \
opflags.h pptok.h preproc.h regs.h tables.h

12
Mkfiles/netware.mak
View file

@ -32,6 +32,7 @@ O = o
# Edit in Makefile.in, not here!
NASM = nasm.o nasmlib.o ver.o \
raa.o saa.o rbtree.o \
realpath.o \
float.o insnsa.o insnsb.o \
directiv.o \
assemble.o labels.o hashtbl.o crc64.o parser.o \
@ -42,7 +43,9 @@ NASM = nasm.o nasmlib.o ver.o \
outelfx32.o \
outobj.o outas86.o outrdf2.o \
outdbg.o outieee.o outmac32.o \
outmac64.o preproc.o quote.o pptok.o \
outmac64.o \
md5c.o codeview.o \
preproc.o quote.o pptok.o \
macros.o listing.o eval.o exprlib.o stdscan.o \
strfunc.o tokhash.o regvals.o regflags.o \
ilog2.o \
@ -171,6 +174,7 @@ listing.o: listing.c compiler.h config.h directiv.h insnsi.h listing.h \
nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h tables.h
macros.o: macros.c compiler.h config.h directiv.h hashtbl.h insnsi.h nasm.h \
nasmlib.h opflags.h outform.h pptok.h preproc.h regs.h tables.h
md5c.o: md5c.c md5.h
nasm.o: nasm.c assemble.h compiler.h config.h directiv.h eval.h float.h \
iflag.h iflaggen.h insns.h insnsi.h labels.h listing.h nasm.h nasmlib.h \
opflags.h outform.h parser.h pptok.h preproc.h raa.h regs.h saa.h stdscan.h \
@ -181,6 +185,9 @@ nasmlib.o: nasmlib.c compiler.h config.h directiv.h iflag.h iflaggen.h \
ndisasm.o: ndisasm.c compiler.h config.h directiv.h disasm.h iflag.h \
iflaggen.h insns.h insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h \
regs.h sync.h tables.h tokens.h
codeview.o: codeview.c compiler.h config.h directiv.h insnsi.h md5.h nasm.h \
nasmlib.h opflags.h outlib.h pecoff.h pptok.h preproc.h regs.h saa.h \
tables.h version.h
nulldbg.o: nulldbg.c compiler.h config.h directiv.h insnsi.h nasm.h \
nasmlib.h opflags.h outlib.h pptok.h preproc.h regs.h tables.h
nullout.o: nullout.c compiler.h config.h directiv.h insnsi.h nasm.h \
@ -241,6 +248,9 @@ preproc.o: preproc.c compiler.h config.h directiv.h eval.h hashtbl.h \
quote.o: quote.c compiler.h config.h nasmlib.h quote.h
raa.o: raa.c compiler.h config.h nasmlib.h raa.h
rbtree.o: rbtree.c compiler.h config.h rbtree.h
realpath.o: realpath.c compiler.h config.h directiv.h iflag.h iflaggen.h \
insns.h insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h \
tables.h tokens.h
regdis.o: regdis.c regdis.h regs.h
regflags.o: regflags.c compiler.h config.h directiv.h insnsi.h nasm.h \
nasmlib.h opflags.h pptok.h preproc.h regs.h tables.h

12
Mkfiles/openwcom.mak
View file

@ -48,6 +48,7 @@ X = .exe
# Edit in Makefile.in, not here!
NASM = nasm.$(O) nasmlib.$(O) ver.$(O) &
raa.$(O) saa.$(O) rbtree.$(O) &
realpath.$(O) &
float.$(O) insnsa.$(O) insnsb.$(O) &
directiv.$(O) &
assemble.$(O) labels.$(O) hashtbl.$(O) crc64.$(O) parser.$(O) &
@ -58,7 +59,9 @@ NASM = nasm.$(O) nasmlib.$(O) ver.$(O) &
output/outelfx32.$(O) &
output/outobj.$(O) output/outas86.$(O) output/outrdf2.$(O) &
output/outdbg.$(O) output/outieee.$(O) output/outmac32.$(O) &
output/outmac64.$(O) preproc.$(O) quote.$(O) pptok.$(O) &
output/outmac64.$(O) &
md5c.$(O) output/codeview.$(O) &
preproc.$(O) quote.$(O) pptok.$(O) &
macros.$(O) listing.$(O) eval.$(O) exprlib.$(O) stdscan.$(O) &
strfunc.$(O) tokhash.$(O) regvals.$(O) regflags.$(O) &
ilog2.$(O) &
@ -309,6 +312,7 @@ listing.$(O): listing.c compiler.h config.h directiv.h insnsi.h listing.h &
macros.$(O): macros.c compiler.h config.h directiv.h hashtbl.h insnsi.h &
nasm.h nasmlib.h opflags.h output/outform.h pptok.h preproc.h regs.h &
tables.h
md5c.$(O): md5c.c md5.h
nasm.$(O): nasm.c assemble.h compiler.h config.h directiv.h eval.h float.h &
iflag.h iflaggen.h insns.h insnsi.h labels.h listing.h nasm.h nasmlib.h &
opflags.h output/outform.h parser.h pptok.h preproc.h raa.h regs.h saa.h &
@ -319,6 +323,9 @@ nasmlib.$(O): nasmlib.c compiler.h config.h directiv.h iflag.h iflaggen.h &
ndisasm.$(O): ndisasm.c compiler.h config.h directiv.h disasm.h iflag.h &
iflaggen.h insns.h insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h &
regs.h sync.h tables.h tokens.h
output/codeview.$(O): output/codeview.c compiler.h config.h directiv.h &
insnsi.h md5.h nasm.h nasmlib.h opflags.h output/outlib.h output/pecoff.h &
pptok.h preproc.h regs.h saa.h tables.h version.h
output/nulldbg.$(O): output/nulldbg.c compiler.h config.h directiv.h &
insnsi.h nasm.h nasmlib.h opflags.h output/outlib.h pptok.h preproc.h &
regs.h tables.h
@ -389,6 +396,9 @@ preproc.$(O): preproc.c compiler.h config.h directiv.h eval.h hashtbl.h &
quote.$(O): quote.c compiler.h config.h nasmlib.h quote.h
raa.$(O): raa.c compiler.h config.h nasmlib.h raa.h
rbtree.$(O): rbtree.c compiler.h config.h rbtree.h
realpath.$(O): realpath.c compiler.h config.h directiv.h iflag.h iflaggen.h &
insns.h insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h &
tables.h tokens.h
regdis.$(O): regdis.c regdis.h regs.h
regflags.$(O): regflags.c compiler.h config.h directiv.h insnsi.h nasm.h &
nasmlib.h opflags.h pptok.h preproc.h regs.h tables.h

12
Mkfiles/owlinux.mak
View file

@ -59,6 +59,7 @@ X = .exe
# Edit in Makefile.in, not here!
NASM = nasm.$(O) nasmlib.$(O) ver.$(O) \
raa.$(O) saa.$(O) rbtree.$(O) \
realpath.$(O) \
float.$(O) insnsa.$(O) insnsb.$(O) \
directiv.$(O) \
assemble.$(O) labels.$(O) hashtbl.$(O) crc64.$(O) parser.$(O) \
@ -69,7 +70,9 @@ NASM = nasm.$(O) nasmlib.$(O) ver.$(O) \
output/outelfx32.$(O) \
output/outobj.$(O) output/outas86.$(O) output/outrdf2.$(O) \
output/outdbg.$(O) output/outieee.$(O) output/outmac32.$(O) \
output/outmac64.$(O) preproc.$(O) quote.$(O) pptok.$(O) \
output/outmac64.$(O) \
md5c.$(O) output/codeview.$(O) \
preproc.$(O) quote.$(O) pptok.$(O) \
macros.$(O) listing.$(O) eval.$(O) exprlib.$(O) stdscan.$(O) \
strfunc.$(O) tokhash.$(O) regvals.$(O) regflags.$(O) \
ilog2.$(O) \
@ -277,6 +280,7 @@ listing.$(O): listing.c compiler.h directiv.h insnsi.h listing.h nasm.h \
nasmlib.h opflags.h pptok.h preproc.h regs.h tables.h
macros.$(O): macros.c compiler.h directiv.h hashtbl.h insnsi.h nasm.h \
nasmlib.h opflags.h output/outform.h pptok.h preproc.h regs.h tables.h
md5c.$(O): md5c.c md5.h
nasm.$(O): nasm.c assemble.h compiler.h directiv.h eval.h float.h iflag.h \
iflaggen.h insns.h insnsi.h labels.h listing.h nasm.h nasmlib.h opflags.h \
output/outform.h parser.h pptok.h preproc.h raa.h regs.h saa.h stdscan.h \
@ -287,6 +291,9 @@ nasmlib.$(O): nasmlib.c compiler.h directiv.h iflag.h iflaggen.h insns.h \
ndisasm.$(O): ndisasm.c compiler.h directiv.h disasm.h iflag.h iflaggen.h \
insns.h insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h sync.h \
tables.h tokens.h
output/codeview.$(O): output/codeview.c compiler.h directiv.h insnsi.h md5.h \
nasm.h nasmlib.h opflags.h output/outlib.h output/pecoff.h pptok.h \
preproc.h regs.h saa.h tables.h version.h
output/nulldbg.$(O): output/nulldbg.c compiler.h directiv.h insnsi.h nasm.h \
nasmlib.h opflags.h output/outlib.h pptok.h preproc.h regs.h tables.h
output/nullout.$(O): output/nullout.c compiler.h directiv.h insnsi.h nasm.h \
@ -351,6 +358,9 @@ preproc.$(O): preproc.c compiler.h directiv.h eval.h hashtbl.h insnsi.h \
quote.$(O): quote.c compiler.h nasmlib.h quote.h
raa.$(O): raa.c compiler.h nasmlib.h raa.h
rbtree.$(O): rbtree.c compiler.h rbtree.h
realpath.$(O): realpath.c compiler.h directiv.h iflag.h iflaggen.h insns.h \
insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h tables.h \
tokens.h
regdis.$(O): regdis.c regdis.h regs.h
regflags.$(O): regflags.c compiler.h directiv.h insnsi.h nasm.h nasmlib.h \
opflags.h pptok.h preproc.h regs.h tables.h

11
configure.in
View file

@ -126,6 +126,12 @@ AC_CHECK_HEADERS(strings.h)
dnl Look for <stdbool.h>
AC_CHECK_HEADERS(stdbool.h)
dnl Look for <unistd.h>
AC_CHECK_HEADERS(unistd.h)
dnl Look for <sys/param.h>
AC_CHECK_HEADERS(sys/param.h)
dnl Checks for library functions.
AC_SUBST(XOBJS)
@ -155,6 +161,11 @@ AC_CHECK_FUNCS(strlcpy)
AC_CHECK_FUNCS(getuid)
AC_CHECK_FUNCS(getgid)
AC_CHECK_FUNCS(realpath)
AC_CHECK_FUNCS(canonicalize_file_name)
AC_CHECK_FUNCS(_fullpath)
AC_CHECK_FUNCS(pathconf)
dnl Check for functions that might not be declared in the headers for
dnl various idiotic reasons (mostly because of library authors
dnl abusing the meaning of __STRICT_ANSI__)

12
nasmlib.c
View file

@ -696,18 +696,6 @@ char *nasm_opt_val(char *p, char **val, char **next)
return p;
}
#ifdef _WIN32
char *nasm_realpath(const char *rel_path)
{
return _fullpath(NULL, rel_path, 0);
}
#else
char *nasm_realpath(const char *rel_path)
{
return realpath(rel_path, NULL);
}
#endif
/*
* initialized data bytes length from opcode
*/

131
realpath.c Normal file
View file

@ -0,0 +1,131 @@
/* ----------------------------------------------------------------------- *
*
* Copyright 2016 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for
* the specific copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ----------------------------------------------------------------------- */
/*
* realpath.c As system-independent as possible implementation of realpath()
*/
#include "compiler.h"
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#include "nasmlib.h"
#if 0 /* def HAVE_CANONICALIZE_FILE_NAME */
/*
* GNU-specific, but avoids the realpath(..., NULL)
* portability problem if it exists.
*/
char *nasm_realpath(const char *rel_path)
{
return canonicalize_file_name(rel_path);
}
#elif defined(HAVE_REALPATH)
/*
* POSIX.1-2008 defines realpath(..., NULL); POSIX.1-2001 doesn't guarantee
* that a NULL second argument is supported.
*/
char *nasm_realpath(const char *rel_path)
{
char *buf;
buf = realpath(rel_path, NULL);
if (buf)
return buf;
/* Not all implemetations of realpath() support a NULL second argument */
if (errno == EINVAL) {
int path_max = -1;
char *buf;
# ifdef PATH_MAX
path_max = PATH_MAX; /* SUSv2 */
# elif defined(MAXPATHLEN)
path_max = MAXPATHLEN; /* Solaris */
# elif defined(HAVE_PATHCONF) && defined(_PC_PATH_MAX)
path_max = pathconf(path, _PC_PATH_MAX); /* POSIX */
# endif
if (path_max < 0)
path_max = 65536; /* Crazily high, we hope */
buf = nasm_malloc(path_max);
if (!realpath(rel_path, buf)) {
nasm_free(buf);
buf = NULL;
} else {
/* On some systems, pathconf() can return a very large value */
buf[path_max - 1] = '\0'; /* Just in case overrun is possible */
buf = nasm_realloc(buf, strlen(buf) + 1);
}
}
return buf;
}
#elif defined(HAVE__FULLPATH)
/*
* win32/win64 API
*/
char *nasm_realpath(const char *rel_path)
{
return _fullpath(NULL, rel_path, 0);
}
#else
/*
* There is nothing we know how to do here, so hope it just works anyway.
*/
char *nasm_realpath(const char *rel_path)
{
return nasm_strdup(rel_path);
}
#endif