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9678ff5b1b

Viktor Szakats

2025-09-30

FAILED Duration: 165s

Subject

build: avoid overriding system `open` and `stat` symbols

Binary

No binary (build failed)

Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

—

Build Log

(log yok)

Commit Diff GitHub →

docs/examples/.checksrc+1 -0

@@ -3,4 +3,5 @@ allowfunc fdopen
	allowfunc fopen
	allowfunc gmtime
	allowfunc localtime
+	allowfunc open
	allowfunc socket

docs/examples/anyauthput.c+1 -0

@@ -104,6 +104,7 @@ int main(int argc, char **argv)
	return 2;

	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	stat(file, &file_info);
	#else
	fstat(fileno(fp), &file_info);

docs/examples/fileupload.c+1 -0

@@ -52,6 +52,7 @@ int main(void)

	/* to get the file size */
	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	if(stat("debugit", &file_info) != 0) {
	#else
	if(fstat(fileno(fd), &file_info) != 0) {

docs/examples/ftpupload.c+1 -0

@@ -96,6 +96,7 @@ int main(void)

	/* to get the file size */
	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	if(stat(LOCAL_FILE, &file_info) != 0) {
	#else
	if(fstat(fileno(hd_src), &file_info) != 0) {

docs/examples/http2-upload.c+1 -0

@@ -234,6 +234,7 @@ static int setup(struct input i, int num, const char upload)
	}

	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	if(stat(upload, &file_info) != 0) {
	#else
	if(fstat(fileno(i->in), &file_info) != 0) {

docs/examples/httpput.c+1 -0

@@ -91,6 +91,7 @@ int main(int argc, char **argv)

	/* get the file size of the local file */
	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	if(stat(file, &file_info) != 0) {
	#else
	if(fstat(fileno(hd_src), &file_info) != 0) {

lib/config-win32.h+1 -0

@@ -484,6 +484,7 @@
	#define CURL_DISABLE_LDAP 1

	#ifndef _MSC_VER
+	/* !checksrc! disable BANNEDFUNC 1 */
	extern int stat(const char path, struct stat buffer);
	#endif

lib/curl_fopen.c+5 -6

@@ -27,10 +27,6 @@
	#if !defined(CURL_DISABLE_COOKIES) \|\| !defined(CURL_DISABLE_ALTSVC) \|\| \
	!defined(CURL_DISABLE_HSTS)

-	#ifdef HAVE_FCNTL_H
-	#include <fcntl.h>
-	#endif
-
	#include "urldata.h"
	#include "rand.h"
	#include "curl_fopen.h"
@@ -107,6 +103,7 @@ CURLcode Curl_fopen(struct Curl_easy data, const char filename,
	goto fail;
	if(
	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	stat(filename, &sb) == -1
	#else
	fstat(fileno(*fh), &sb) == -1
@@ -137,9 +134,11 @@ CURLcode Curl_fopen(struct Curl_easy data, const char filename,
	result = CURLE_WRITE_ERROR;
	#if (defined(ANDROID) \|\| defined(__ANDROID__)) && \
	(defined(__i386__) \|\| defined(__arm__))
-	fd = open(tempstore, O_WRONLY \| O_CREAT \| O_EXCL, (mode_t)(0600\|sb.st_mode));
+	fd = curlx_open(tempstore, O_WRONLY \| O_CREAT \| O_EXCL,
+	(mode_t)(0600 \| sb.st_mode));
	#else
-	fd = open(tempstore, O_WRONLY \| O_CREAT \| O_EXCL, 0600\|sb.st_mode);
+	fd = curlx_open(tempstore, O_WRONLY \| O_CREAT \| O_EXCL,
+	0600 \| sb.st_mode);
	#endif
	if(fd == -1)
	goto fail;

lib/curl_setup.h+0 -6

@@ -506,12 +506,6 @@
	# endif
	# define LSEEK_ERROR (long)-1
	# endif
-	# ifndef UNDER_CE
-	int curlx_win32_stat(const char path, struct_stat buffer);
-	int curlx_win32_open(const char *filename, int oflag, ...);
-	# define stat(fname, stp) curlx_win32_stat(fname, stp)
-	# define open curlx_win32_open
-	# endif
	#elif defined(__DJGPP__)
	/* Requires DJGPP 2.04 */
	# include <unistd.h>

lib/curlx/fopen.h+15 -6

@@ -30,19 +30,28 @@

	#if defined(_WIN32) && !defined(UNDER_CE)
	FILE curlx_win32_fopen(const char filename, const char *mode);
+	int curlx_win32_stat(const char path, struct_stat buffer);
+	int curlx_win32_open(const char *filename, int oflag, ...);
	#define CURLX_FOPEN_LOW(fname, mode) curlx_win32_fopen(fname, mode)
+	#define curlx_stat(fname, stp) curlx_win32_stat(fname, stp)
+	#define curlx_open curlx_win32_open
	#else
-	#define CURLX_FOPEN_LOW fopen
+	#ifdef HAVE_FCNTL_H
+	#include <fcntl.h> /* for open() */
+	#endif
+	#define CURLX_FOPEN_LOW fopen
+	#define curlx_stat(fname, stp) stat(fname, stp)
+	#define curlx_open open
	#endif

	#ifdef CURLDEBUG
-	#define curlx_fopen(file,mode) curl_dbg_fopen(file,mode,__LINE__,__FILE__)
+	#define curlx_fopen(file,mode) curl_dbg_fopen(file,mode,__LINE__,__FILE__)
	#define curlx_fdopen(file,mode) curl_dbg_fdopen(file,mode,__LINE__,__FILE__)
-	#define curlx_fclose(file) curl_dbg_fclose(file,__LINE__,__FILE__)
+	#define curlx_fclose(file) curl_dbg_fclose(file,__LINE__,__FILE__)
	#else
-	#define curlx_fopen CURLX_FOPEN_LOW
-	#define curlx_fdopen fdopen
-	#define curlx_fclose fclose
+	#define curlx_fopen CURLX_FOPEN_LOW
+	#define curlx_fdopen fdopen
+	#define curlx_fclose fclose
	#endif

	#endif /* HEADER_CURLX_FOPEN_H */

lib/file.c+7 -10

@@ -46,10 +46,6 @@
	#include <sys/param.h>
	#endif

-	#ifdef HAVE_FCNTL_H
-	#include <fcntl.h>
-	#endif
-
	#ifdef HAVE_SYS_TYPES_H
	#include <sys/types.h>
	#endif
@@ -70,6 +66,7 @@
	#include "transfer.h"
	#include "url.h"
	#include "parsedate.h" /* for the week day and month names */
+	#include "curlx/fopen.h"
	#include "curlx/warnless.h"
	#include "curl_range.h"
	/* The last 3 #include files should be in this order */
@@ -237,7 +234,7 @@ static CURLcode file_connect(struct Curl_easy data, bool done)
	return CURLE_URL_MALFORMAT;
	}

-	fd = open(actual_path, O_RDONLY\|CURL_O_BINARY);
+	fd = curlx_open(actual_path, O_RDONLY \| CURL_O_BINARY);
	file->path = actual_path;
	#else
	if(memchr(real_path, 0, real_path_len)) {
@@ -261,16 +258,16 @@ static CURLcode file_connect(struct Curl_easy data, bool done)
	extern int __unix_path_semantics;
	if(strchr(real_path + 1, ':')) {
	/* Amiga absolute path */
-	fd = open(real_path + 1, O_RDONLY);
+	fd = curlx_open(real_path + 1, O_RDONLY);
	file->path++;
	}
	else if(__unix_path_semantics) {
	/* -lunix fallback */
-	fd = open(real_path, O_RDONLY);
+	fd = curlx_open(real_path, O_RDONLY);
	}
	}
	#else
-	fd = open(real_path, O_RDONLY);
+	fd = curlx_open(real_path, O_RDONLY);
	file->path = real_path;
	#endif
	#endif
@@ -349,9 +346,9 @@ static CURLcode file_upload(struct Curl_easy *data,

	#if (defined(ANDROID) \|\| defined(__ANDROID__)) && \
	(defined(__i386__) \|\| defined(__arm__))
-	fd = open(file->path, mode, (mode_t)data->set.new_file_perms);
+	fd = curlx_open(file->path, mode, (mode_t)data->set.new_file_perms);
	#else
-	fd = open(file->path, mode, data->set.new_file_perms);
+	fd = curlx_open(file->path, mode, data->set.new_file_perms);
	#endif
	if(fd < 0) {
	failf(data, "cannot open %s for writing", file->path);

lib/mime.c+2 -2

@@ -205,7 +205,7 @@ static FILE * vmsfopenread(const char file, const char mode)
	struct_stat statbuf;
	int result;

-	result = stat(file, &statbuf);
+	result = curlx_stat(file, &statbuf);

	switch(statbuf.st_fab_rfm) {
	case FAB$C_VAR:
@@ -1412,7 +1412,7 @@ CURLcode curl_mime_filedata(curl_mimepart part, const char filename)
	char *base;
	struct_stat sbuf;

-	if(stat(filename, &sbuf))
+	if(curlx_stat(filename, &sbuf))
	result = CURLE_READ_ERROR;
	else {
	part->data = strdup(filename);

lib/vquic/vquic.c+4 -5

@@ -27,15 +27,13 @@
	#ifdef HAVE_NETINET_UDP_H
	#include <netinet/udp.h>
	#endif
-	#ifdef HAVE_FCNTL_H
-	#include <fcntl.h>
-	#endif
	#ifdef USE_NGHTTP3
	#include <nghttp3/nghttp3.h>
	#endif
	#include "../urldata.h"
	#include "../bufq.h"
	#include "../curlx/dynbuf.h"
+	#include "../curlx/fopen.h"
	#include "../cfilters.h"
	#include "../curl_trc.h"
	#include "curl_ngtcp2.h"
@@ -665,8 +663,9 @@ CURLcode Curl_qlogdir(struct Curl_easy *data,
	result = curlx_dyn_add(&fname, ".sqlog");

	if(!result) {
-	int qlogfd = open(curlx_dyn_ptr(&fname), O_WRONLY\|O_CREAT\|CURL_O_BINARY,
-	data->set.new_file_perms);
+	int qlogfd = curlx_open(curlx_dyn_ptr(&fname),
+	O_WRONLY \| O_CREAT \| CURL_O_BINARY,
+	data->set.new_file_perms);
	if(qlogfd != -1)
	*qlogfdp = qlogfd;
	}

lib/vssh/libssh2.c+5 -8

@@ -30,10 +30,6 @@

	#include <limits.h>

-	#ifdef HAVE_FCNTL_H
-	#include <fcntl.h>
-	#endif
-
	#ifdef HAVE_NETINET_IN_H
	#include <netinet/in.h>
	#endif
@@ -68,6 +64,7 @@
	#include "../sockaddr.h" /* required for Curl_sockaddr_storage */
	#include "../multiif.h"
	#include "../select.h"
+	#include "../curlx/fopen.h"
	#include "../curlx/warnless.h"
	#include "curl_path.h"
	#include "../curlx/strparse.h"
@@ -1199,12 +1196,12 @@ static CURLcode ssh_state_pkey_init(struct Curl_easy *data,
	sshc->rsa = aprintf("%s/.ssh/id_rsa", home);
	if(!sshc->rsa)
	out_of_memory = TRUE;
-	else if(stat(sshc->rsa, &sbuf)) {
+	else if(curlx_stat(sshc->rsa, &sbuf)) {
	free(sshc->rsa);
	sshc->rsa = aprintf("%s/.ssh/id_dsa", home);
	if(!sshc->rsa)
	out_of_memory = TRUE;
-	else if(stat(sshc->rsa, &sbuf)) {
+	else if(curlx_stat(sshc->rsa, &sbuf)) {
	Curl_safefree(sshc->rsa);
	}
	}
@@ -1213,10 +1210,10 @@ static CURLcode ssh_state_pkey_init(struct Curl_easy *data,
	if(!out_of_memory && !sshc->rsa) {
	/* Nothing found; try the current dir. */
	sshc->rsa = strdup("id_rsa");
-	if(sshc->rsa && stat(sshc->rsa, &sbuf)) {
+	if(sshc->rsa && curlx_stat(sshc->rsa, &sbuf)) {
	free(sshc->rsa);
	sshc->rsa = strdup("id_dsa");
-	if(sshc->rsa && stat(sshc->rsa, &sbuf)) {
+	if(sshc->rsa && curlx_stat(sshc->rsa, &sbuf)) {
	free(sshc->rsa);
	/* Out of guesses. Set to the empty string to avoid
	* surprising info messages. */

scripts/checksrc.pl+2 -0

@@ -91,6 +91,8 @@ my %banfunc = (
	"fclose" => 1,
	"fdopen" => 1,
	"fopen" => 1,
+	"open" => 1,
+	"stat" => 1,
	);

	my %warnings_extended = (

src/tool_cb_wrt.c+5 -8

@@ -23,11 +23,6 @@
	***************************************************************************/
	#include "tool_setup.h"

-	#ifdef HAVE_FCNTL_H
-	/* for open() */
-	#include <fcntl.h>
-	#endif
-
	#include "tool_cfgable.h"
	#include "tool_msgs.h"
	#include "tool_cb_wrt.h"
@@ -60,7 +55,8 @@ bool tool_create_output_file(struct OutStruct *outs,
	else {
	int fd;
	do {
-	fd = open(fname, O_CREAT \| O_WRONLY \| O_EXCL \| CURL_O_BINARY, OPENMODE);
+	fd = curlx_open(fname, O_CREAT \| O_WRONLY \| O_EXCL \| CURL_O_BINARY,
+	OPENMODE);
	/* Keep retrying in the hope that it is not interrupted sometime */
	/* !checksrc! disable ERRNOVAR 1 */
	} while(fd == -1 && errno == EINTR);
@@ -78,8 +74,9 @@ bool tool_create_output_file(struct OutStruct *outs,
	return FALSE;
	next_num++;
	do {
-	fd = open(curlx_dyn_ptr(&fbuffer),
-	O_CREAT \| O_WRONLY \| O_EXCL \| CURL_O_BINARY, OPENMODE);
+	fd = curlx_open(curlx_dyn_ptr(&fbuffer),
+	O_CREAT \| O_WRONLY \| O_EXCL \| CURL_O_BINARY,
+	OPENMODE);
	/* Keep retrying in the hope that it is not interrupted sometime */
	} while(fd == -1 && errno == EINTR);
	}

src/tool_doswin.c+1 -1

@@ -532,7 +532,7 @@ static SANITIZEcode rename_if_reserved_dos(char **const sanitized,
	identify whether it is a reserved device name and not a regular
	filename. */
	#ifdef MSDOS
-	if(base && ((stat(base, &st_buf)) == 0) && (S_ISCHR(st_buf.st_mode))) {
+	if(base && (curlx_stat(base, &st_buf) == 0) && S_ISCHR(st_buf.st_mode)) {
	/* Prepend a '_' */
	size_t blen = strlen(base);
	if(blen) {

src/tool_filetime.c+1 -1

@@ -75,7 +75,7 @@ int getfiletime(const char filename, curl_off_t stamp)
	}
	#else
	struct_stat statbuf;
-	if(stat(filename, &statbuf) != -1) {
+	if(curlx_stat(filename, &statbuf) != -1) {
	*stamp = (curl_off_t)statbuf.st_mtime;
	rc = 0;
	}

src/tool_findfile.c+1 -5

@@ -33,10 +33,6 @@
	#endif
	#endif

-	#ifdef HAVE_FCNTL_H
-	#include <fcntl.h>
-	#endif
-
	#include "tool_findfile.h"
	#include "tool_cfgable.h"

@@ -77,7 +73,7 @@ static char checkhome(const char home, const char *fname, bool dotscore)
	else
	c = aprintf("%s" DIR_CHAR "%s", home, fname);
	if(c) {
-	int fd = open(c, O_RDONLY);
+	int fd = curlx_open(c, O_RDONLY);
	if(fd >= 0) {
	char *path = strdup(c);
	close(fd);

src/tool_getpass.c+1 -5

@@ -30,10 +30,6 @@
	#ifndef HAVE_GETPASS_R
	/* this file is only for systems without getpass_r() */

-	#ifdef HAVE_FCNTL_H
-	# include <fcntl.h>
-	#endif
-
	#ifdef HAVE_TERMIOS_H
	# include <termios.h>
	#elif defined(HAVE_TERMIO_H)
@@ -178,7 +174,7 @@ char getpass_r(const char prompt, /* prompt to display */
	{
	ssize_t nread;
	bool disabled;
-	int fd = open("/dev/tty", O_RDONLY);
+	int fd = curlx_open("/dev/tty", O_RDONLY);
	if(fd == -1)
	fd = STDIN_FILENO; /* use stdin if the tty could not be used */

src/tool_operate.c+8 -13

@@ -23,10 +23,6 @@
	***************************************************************************/
	#include "tool_setup.h"

-	#ifdef HAVE_FCNTL_H
-	# include <fcntl.h>
-	#endif
-
	#ifdef HAVE_LOCALE_H
	# include <locale.h>
	#endif
@@ -279,22 +275,22 @@ static CURLcode pre_transfer(struct per_transfer *per)
	#ifdef __VMS
	/* Calculate the real upload size for VMS */
	per->infd = -1;
-	if(stat(per->uploadfile, &fileinfo) == 0) {
+	if(curlx_stat(per->uploadfile, &fileinfo) == 0) {
	fileinfo.st_size = VmsSpecialSize(uploadfile, &fileinfo);
	switch(fileinfo.st_fab_rfm) {
	case FAB$C_VAR:
	case FAB$C_VFC:
	case FAB$C_STMCR:
-	per->infd = open(per->uploadfile, O_RDONLY \| CURL_O_BINARY);
+	per->infd = curlx_open(per->uploadfile, O_RDONLY \| CURL_O_BINARY);
	break;
	default:
-	per->infd = open(per->uploadfile, O_RDONLY \| CURL_O_BINARY,
-	"rfm=stmlf", "ctx=stm");
+	per->infd = curlx_open(per->uploadfile, O_RDONLY \| CURL_O_BINARY,
+	"rfm=stmlf", "ctx=stm");
	}
	}
	if(per->infd == -1)
	#else
-	per->infd = open(per->uploadfile, O_RDONLY \| CURL_O_BINARY);
+	per->infd = curlx_open(per->uploadfile, O_RDONLY \| CURL_O_BINARY);
	if((per->infd == -1) \|\| fstat(per->infd, &fileinfo))
	#endif
	{
@@ -668,8 +664,7 @@ static CURLcode post_per_transfer(struct per_transfer *per,
	}
	if(result && config->rm_partial) {
	struct_stat st;
-	if(!stat(outs->filename, &st) &&
-	S_ISREG(st.st_mode)) {
+	if(!curlx_stat(outs->filename, &st) && S_ISREG(st.st_mode)) {
	if(!unlink(outs->filename))
	notef("Removed output file: %s", outs->filename);
	else
@@ -974,7 +969,7 @@ static CURLcode setup_outfile(struct OperationConfig *config,

	if(config->skip_existing) {
	struct_stat fileinfo;
-	if(!stat(per->outfile, &fileinfo)) {
+	if(!curlx_stat(per->outfile, &fileinfo)) {
	/* file is present */
	notef("skips transfer, \"%s\" exists locally", per->outfile);
	per->skip = TRUE;
@@ -987,7 +982,7 @@ static CURLcode setup_outfile(struct OperationConfig *config,
	of the file as it is now and open it for append instead */
	struct_stat fileinfo;
	/* VMS -- Danger, the filesize is only valid for stream files */
-	if(stat(per->outfile, &fileinfo) == 0)
+	if(curlx_stat(per->outfile, &fileinfo) == 0)
	/* set offset to current file size: */
	config->resume_from = fileinfo.st_size;
	else

tests/libtest/lib505.c+1 -0

@@ -61,6 +61,7 @@ static CURLcode test_lib505(const char *URL)

	/* get the file size of the local file */
	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	hd = stat(libtest_arg2, &file_info);
	#else
	hd = fstat(fileno(hd_src), &file_info);

tests/libtest/lib518.c+1 -1

@@ -287,7 +287,7 @@ static int t518_test_rlimit(int keep_open)

	/* open a dummy descriptor */

-	t518_testfd[0] = open(DEV_NULL, O_RDONLY);
+	t518_testfd[0] = curlx_open(DEV_NULL, O_RDONLY);
	if(t518_testfd[0] < 0) {
	curl_msnprintf(strbuff, sizeof(strbuff), "opening of %s failed", DEV_NULL);
	t518_store_errmsg(strbuff, errno);

tests/libtest/lib525.c+1 -0

@@ -52,6 +52,7 @@ static CURLcode test_lib525(const char *URL)

	/* get the file size of the local file */
	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	hd = stat(libtest_arg2, &file_info);
	#else
	hd = fstat(fileno(hd_src), &file_info);

tests/libtest/lib537.c+1 -1

@@ -289,7 +289,7 @@ static int t537_test_rlimit(int keep_open)

	/* open a dummy descriptor */

-	t537_testfd[0] = open(DEV_NULL, O_RDONLY);
+	t537_testfd[0] = curlx_open(DEV_NULL, O_RDONLY);
	if(t537_testfd[0] < 0) {
	curl_msnprintf(strbuff, sizeof(strbuff), "opening of %s failed", DEV_NULL);
	t537_store_errmsg(strbuff, errno);

tests/libtest/lib541.c+1 -0

@@ -52,6 +52,7 @@ static CURLcode test_lib541(const char *URL)

	/* get the file size of the local file */
	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	hd = stat(libtest_arg2, &file_info);
	#else
	hd = fstat(fileno(hd_src), &file_info);

tests/libtest/lib568.c+1 -1

@@ -66,7 +66,7 @@ static CURLcode test_lib568(const char *URL)
	curl_free(stream_uri);
	stream_uri = NULL;

-	sdp = open(libtest_arg2, O_RDONLY);
+	sdp = curlx_open(libtest_arg2, O_RDONLY);
	if(sdp == -1) {
	curl_mfprintf(stderr, "can't open %s\n", libtest_arg2);
	res = TEST_ERR_MAJOR_BAD;

tests/libtest/lib572.c+1 -1

@@ -84,7 +84,7 @@ static CURLcode test_lib572(const char *URL)
	stream_uri = NULL;

	/* PUT style GET_PARAMETERS */
-	params = open(libtest_arg2, O_RDONLY);
+	params = curlx_open(libtest_arg2, O_RDONLY);
	if(params == -1) {
	curl_mfprintf(stderr, "can't open %s\n", libtest_arg2);
	res = TEST_ERR_MAJOR_BAD;

tests/libtest/lib582.c+1 -0

@@ -253,6 +253,7 @@ static CURLcode test_lib582(const char *URL)

	/* get the file size of the local file */
	#ifdef UNDER_CE
+	/* !checksrc! disable BANNEDFUNC 1 */
	hd = stat(libtest_arg2, &file_info);
	#else
	hd = fstat(fileno(hd_src), &file_info);

tests/server/.checksrc+1 -0

@@ -3,6 +3,7 @@ allowfunc fclose
	allowfunc fopen
	allowfunc freeaddrinfo
	allowfunc getaddrinfo
+	allowfunc open
	allowfunc recv
	allowfunc send
	allowfunc socket

tests/server/util.c+3 -3

@@ -373,12 +373,12 @@ static void exit_signal_handler(int signum)
	(void)!write(STDERR_FILENO, msg, sizeof(msg) - 1);
	}
	else {
-	int fd;
	#ifdef _WIN32
-	fd = _open(serverlogfile, O_WRONLY\|O_CREAT\|O_APPEND, S_IREAD \| S_IWRITE);
+	#define OPENMODE S_IREAD \| S_IWRITE
	#else
-	fd = open(serverlogfile, O_WRONLY\|O_CREAT\|O_APPEND, S_IRUSR \| S_IWUSR);
+	#define OPENMODE S_IRUSR \| S_IWUSR
	#endif
+	int fd = open(serverlogfile, O_WRONLY \| O_CREAT \| O_APPEND, OPENMODE);
	if(fd != -1) {
	static const char msg[] = "exit_signal_handler: called\n";
	(void)!write(fd, msg, sizeof(msg) - 1);