[Global]: loading init
This commit is contained in:
JerryALT
511
deps/curl/tests/libtest/lib537.c
vendored
Normal file
511
deps/curl/tests/libtest/lib537.c
vendored
Normal file
@ -0,0 +1,511 @@
|
||||
/***************************************************************************
|
||||
* _ _ ____ _
|
||||
* Project ___| | | | _ \| |
|
||||
* / __| | | | |_) | |
|
||||
* | (__| |_| | _ <| |___
|
||||
* \___|\___/|_| \_\_____|
|
||||
*
|
||||
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
|
||||
*
|
||||
* This software is licensed as described in the file COPYING, which
|
||||
* you should have received as part of this distribution. The terms
|
||||
* are also available at https://curl.se/docs/copyright.html.
|
||||
*
|
||||
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
||||
* copies of the Software, and permit persons to whom the Software is
|
||||
* furnished to do so, under the terms of the COPYING file.
|
||||
*
|
||||
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||
* KIND, either express or implied.
|
||||
*
|
||||
* SPDX-License-Identifier: curl
|
||||
*
|
||||
***************************************************************************/
|
||||
#include "test.h"
|
||||
|
||||
#ifdef HAVE_SYS_RESOURCE_H
|
||||
#include <sys/resource.h>
|
||||
#endif
|
||||
#ifdef HAVE_FCNTL_H
|
||||
#include <fcntl.h>
|
||||
#endif
|
||||
#include <limits.h>
|
||||
|
||||
#include "warnless.h"
|
||||
#include "memdebug.h"
|
||||
|
||||
#if !defined(HAVE_POLL_FINE) && \
|
||||
!defined(USE_WINSOCK) && \
|
||||
!defined(FD_SETSIZE)
|
||||
#error "this test requires FD_SETSIZE"
|
||||
#endif
|
||||
|
||||
#define SAFETY_MARGIN (11)
|
||||
|
||||
#if defined(_WIN32) || defined(MSDOS)
|
||||
#define DEV_NULL "NUL"
|
||||
#else
|
||||
#define DEV_NULL "/dev/null"
|
||||
#endif
|
||||
|
||||
#if defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
|
||||
|
||||
static int *fd = NULL;
|
||||
static struct rlimit num_open;
|
||||
static char msgbuff[256];
|
||||
|
||||
static void store_errmsg(const char *msg, int err)
|
||||
{
|
||||
if(!err)
|
||||
msnprintf(msgbuff, sizeof(msgbuff), "%s", msg);
|
||||
else
|
||||
msnprintf(msgbuff, sizeof(msgbuff), "%s, errno %d, %s", msg,
|
||||
err, strerror(err));
|
||||
}
|
||||
|
||||
static void close_file_descriptors(void)
|
||||
{
|
||||
for(num_open.rlim_cur = 0;
|
||||
num_open.rlim_cur < num_open.rlim_max;
|
||||
num_open.rlim_cur++)
|
||||
if(fd[num_open.rlim_cur] > 0)
|
||||
close(fd[num_open.rlim_cur]);
|
||||
free(fd);
|
||||
fd = NULL;
|
||||
}
|
||||
|
||||
static int fopen_works(void)
|
||||
{
|
||||
FILE *fpa[3];
|
||||
int i;
|
||||
int ret = 1;
|
||||
|
||||
for(i = 0; i < 3; i++) {
|
||||
fpa[i] = NULL;
|
||||
}
|
||||
for(i = 0; i < 3; i++) {
|
||||
fpa[i] = fopen(DEV_NULL, FOPEN_READTEXT);
|
||||
if(!fpa[i]) {
|
||||
store_errmsg("fopen failed", errno);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
ret = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
for(i = 0; i < 3; i++) {
|
||||
if(fpa[i])
|
||||
fclose(fpa[i]);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void rlim2str(char *buf, size_t len, rlim_t val)
|
||||
{
|
||||
#ifdef RLIM_INFINITY
|
||||
if(val == RLIM_INFINITY) {
|
||||
msnprintf(buf, len, "INFINITY");
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
#ifdef HAVE_LONGLONG
|
||||
if(sizeof(rlim_t) > sizeof(long))
|
||||
msnprintf(buf, len, "%llu", (unsigned long long)val);
|
||||
else
|
||||
#endif
|
||||
{
|
||||
if(sizeof(rlim_t) < sizeof(long))
|
||||
msnprintf(buf, len, "%u", (unsigned int)val);
|
||||
else
|
||||
msnprintf(buf, len, "%lu", (unsigned long)val);
|
||||
}
|
||||
}
|
||||
|
||||
static int rlimit(int keep_open)
|
||||
{
|
||||
int *tmpfd;
|
||||
rlim_t nitems, i;
|
||||
int *memchunk = NULL;
|
||||
struct rlimit rl;
|
||||
char strbuff[256];
|
||||
char strbuff1[81];
|
||||
|
||||
/* get initial open file limits */
|
||||
|
||||
if(getrlimit(RLIMIT_NOFILE, &rl) != 0) {
|
||||
store_errmsg("getrlimit() failed", errno);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* show initial open file limits */
|
||||
|
||||
rlim2str(strbuff, sizeof(strbuff), rl.rlim_cur);
|
||||
fprintf(stderr, "initial soft limit: %s\n", strbuff);
|
||||
|
||||
rlim2str(strbuff, sizeof(strbuff), rl.rlim_max);
|
||||
fprintf(stderr, "initial hard limit: %s\n", strbuff);
|
||||
|
||||
/*
|
||||
* if soft limit and hard limit are different we ask the
|
||||
* system to raise soft limit all the way up to the hard
|
||||
* limit. Due to some other system limit the soft limit
|
||||
* might not be raised up to the hard limit. So from this
|
||||
* point the resulting soft limit is our limit. Trying to
|
||||
* open more than soft limit file descriptors will fail.
|
||||
*/
|
||||
|
||||
if(rl.rlim_cur != rl.rlim_max) {
|
||||
|
||||
#ifdef OPEN_MAX
|
||||
if((rl.rlim_cur > 0) &&
|
||||
(rl.rlim_cur < OPEN_MAX)) {
|
||||
fprintf(stderr, "raising soft limit up to OPEN_MAX\n");
|
||||
rl.rlim_cur = OPEN_MAX;
|
||||
if(setrlimit(RLIMIT_NOFILE, &rl) != 0) {
|
||||
/* on failure don't abort just issue a warning */
|
||||
store_errmsg("setrlimit() failed", errno);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
msgbuff[0] = '\0';
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
fprintf(stderr, "raising soft limit up to hard limit\n");
|
||||
rl.rlim_cur = rl.rlim_max;
|
||||
if(setrlimit(RLIMIT_NOFILE, &rl) != 0) {
|
||||
/* on failure don't abort just issue a warning */
|
||||
store_errmsg("setrlimit() failed", errno);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
msgbuff[0] = '\0';
|
||||
}
|
||||
|
||||
/* get current open file limits */
|
||||
|
||||
if(getrlimit(RLIMIT_NOFILE, &rl) != 0) {
|
||||
store_errmsg("getrlimit() failed", errno);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
return -3;
|
||||
}
|
||||
|
||||
/* show current open file limits */
|
||||
|
||||
rlim2str(strbuff, sizeof(strbuff), rl.rlim_cur);
|
||||
fprintf(stderr, "current soft limit: %s\n", strbuff);
|
||||
|
||||
rlim2str(strbuff, sizeof(strbuff), rl.rlim_max);
|
||||
fprintf(stderr, "current hard limit: %s\n", strbuff);
|
||||
|
||||
} /* (rl.rlim_cur != rl.rlim_max) */
|
||||
|
||||
/*
|
||||
* test 537 is all about testing libcurl functionality
|
||||
* when the system has nearly exhausted the number of
|
||||
* available file descriptors. Test 537 will try to run
|
||||
* with a very small number of file descriptors available.
|
||||
* This implies that any file descriptor which is open
|
||||
* when the test runs will have a number in the high range
|
||||
* of whatever the system supports.
|
||||
*/
|
||||
|
||||
/*
|
||||
* reserve a chunk of memory before opening file descriptors to
|
||||
* avoid a low memory condition once the file descriptors are
|
||||
* open. System conditions that could make the test fail should
|
||||
* be addressed in the precheck phase. This chunk of memory shall
|
||||
* be always free()ed before exiting the rlimit() function so
|
||||
* that it becomes available to the test.
|
||||
*/
|
||||
|
||||
for(nitems = i = 1; nitems <= i; i *= 2)
|
||||
nitems = i;
|
||||
if(nitems > 0x7fff)
|
||||
nitems = 0x40000;
|
||||
do {
|
||||
num_open.rlim_max = sizeof(*memchunk) * nitems;
|
||||
rlim2str(strbuff, sizeof(strbuff), num_open.rlim_max);
|
||||
fprintf(stderr, "allocating memchunk %s byte array\n", strbuff);
|
||||
memchunk = malloc(sizeof(*memchunk) * (size_t)nitems);
|
||||
if(!memchunk) {
|
||||
fprintf(stderr, "memchunk, malloc() failed\n");
|
||||
nitems /= 2;
|
||||
}
|
||||
} while(nitems && !memchunk);
|
||||
if(!memchunk) {
|
||||
store_errmsg("memchunk, malloc() failed", errno);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
return -4;
|
||||
}
|
||||
|
||||
/* initialize it to fight lazy allocation */
|
||||
|
||||
fprintf(stderr, "initializing memchunk array\n");
|
||||
|
||||
for(i = 0; i < nitems; i++)
|
||||
memchunk[i] = -1;
|
||||
|
||||
/* set the number of file descriptors we will try to open */
|
||||
|
||||
#ifdef RLIM_INFINITY
|
||||
if((rl.rlim_cur > 0) && (rl.rlim_cur != RLIM_INFINITY)) {
|
||||
#else
|
||||
if(rl.rlim_cur > 0) {
|
||||
#endif
|
||||
/* soft limit minus SAFETY_MARGIN */
|
||||
num_open.rlim_max = rl.rlim_cur - SAFETY_MARGIN;
|
||||
}
|
||||
else {
|
||||
/* a huge number of file descriptors */
|
||||
for(nitems = i = 1; nitems <= i; i *= 2)
|
||||
nitems = i;
|
||||
if(nitems > 0x7fff)
|
||||
nitems = 0x40000;
|
||||
num_open.rlim_max = nitems;
|
||||
}
|
||||
|
||||
/* verify that we won't overflow size_t in malloc() */
|
||||
|
||||
if((size_t)(num_open.rlim_max) > ((size_t)-1) / sizeof(*fd)) {
|
||||
rlim2str(strbuff1, sizeof(strbuff1), num_open.rlim_max);
|
||||
msnprintf(strbuff, sizeof(strbuff), "unable to allocate an array for %s "
|
||||
"file descriptors, would overflow size_t", strbuff1);
|
||||
store_errmsg(strbuff, 0);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
free(memchunk);
|
||||
return -5;
|
||||
}
|
||||
|
||||
/* allocate array for file descriptors */
|
||||
|
||||
do {
|
||||
rlim2str(strbuff, sizeof(strbuff), num_open.rlim_max);
|
||||
fprintf(stderr, "allocating array for %s file descriptors\n", strbuff);
|
||||
|
||||
fd = malloc(sizeof(*fd) * (size_t)(num_open.rlim_max));
|
||||
if(!fd) {
|
||||
fprintf(stderr, "fd, malloc() failed\n");
|
||||
num_open.rlim_max /= 2;
|
||||
}
|
||||
} while(num_open.rlim_max && !fd);
|
||||
if(!fd) {
|
||||
store_errmsg("fd, malloc() failed", errno);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
free(memchunk);
|
||||
return -6;
|
||||
}
|
||||
|
||||
/* initialize it to fight lazy allocation */
|
||||
|
||||
fprintf(stderr, "initializing fd array\n");
|
||||
|
||||
for(num_open.rlim_cur = 0;
|
||||
num_open.rlim_cur < num_open.rlim_max;
|
||||
num_open.rlim_cur++)
|
||||
fd[num_open.rlim_cur] = -1;
|
||||
|
||||
rlim2str(strbuff, sizeof(strbuff), num_open.rlim_max);
|
||||
fprintf(stderr, "trying to open %s file descriptors\n", strbuff);
|
||||
|
||||
/* open a dummy descriptor */
|
||||
|
||||
fd[0] = open(DEV_NULL, O_RDONLY);
|
||||
if(fd[0] < 0) {
|
||||
msnprintf(strbuff, sizeof(strbuff), "opening of %s failed", DEV_NULL);
|
||||
store_errmsg(strbuff, errno);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
free(fd);
|
||||
fd = NULL;
|
||||
free(memchunk);
|
||||
return -7;
|
||||
}
|
||||
|
||||
/* create a bunch of file descriptors */
|
||||
|
||||
for(num_open.rlim_cur = 1;
|
||||
num_open.rlim_cur < num_open.rlim_max;
|
||||
num_open.rlim_cur++) {
|
||||
|
||||
fd[num_open.rlim_cur] = dup(fd[0]);
|
||||
|
||||
if(fd[num_open.rlim_cur] < 0) {
|
||||
|
||||
fd[num_open.rlim_cur] = -1;
|
||||
|
||||
rlim2str(strbuff1, sizeof(strbuff1), num_open.rlim_cur);
|
||||
msnprintf(strbuff, sizeof(strbuff), "dup() attempt %s failed", strbuff1);
|
||||
fprintf(stderr, "%s\n", strbuff);
|
||||
|
||||
rlim2str(strbuff1, sizeof(strbuff1), num_open.rlim_cur);
|
||||
msnprintf(strbuff, sizeof(strbuff), "fds system limit seems close to %s",
|
||||
strbuff1);
|
||||
fprintf(stderr, "%s\n", strbuff);
|
||||
|
||||
num_open.rlim_max = num_open.rlim_cur - SAFETY_MARGIN;
|
||||
|
||||
num_open.rlim_cur -= num_open.rlim_max;
|
||||
rlim2str(strbuff1, sizeof(strbuff1), num_open.rlim_cur);
|
||||
msnprintf(strbuff, sizeof(strbuff), "closing %s file descriptors",
|
||||
strbuff1);
|
||||
fprintf(stderr, "%s\n", strbuff);
|
||||
|
||||
for(num_open.rlim_cur = num_open.rlim_max;
|
||||
fd[num_open.rlim_cur] >= 0;
|
||||
num_open.rlim_cur++) {
|
||||
close(fd[num_open.rlim_cur]);
|
||||
fd[num_open.rlim_cur] = -1;
|
||||
}
|
||||
|
||||
rlim2str(strbuff, sizeof(strbuff), num_open.rlim_max);
|
||||
fprintf(stderr, "shrinking array for %s file descriptors\n", strbuff);
|
||||
|
||||
/* we don't care if we can't shrink it */
|
||||
|
||||
tmpfd = realloc(fd, sizeof(*fd) * (size_t)(num_open.rlim_max));
|
||||
if(tmpfd) {
|
||||
fd = tmpfd;
|
||||
tmpfd = NULL;
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
rlim2str(strbuff, sizeof(strbuff), num_open.rlim_max);
|
||||
fprintf(stderr, "%s file descriptors open\n", strbuff);
|
||||
|
||||
#if !defined(HAVE_POLL_FINE) && !defined(USE_WINSOCK)
|
||||
|
||||
/*
|
||||
* when using select() instead of poll() we cannot test
|
||||
* libcurl functionality with a socket number equal or
|
||||
* greater than FD_SETSIZE. In any case, macro VERIFY_SOCK
|
||||
* in lib/select.c enforces this check and protects libcurl
|
||||
* from a possible crash. The effect of this protection
|
||||
* is that test 537 will always fail, since the actual
|
||||
* call to select() never takes place. We skip test 537
|
||||
* with an indication that select limit would be exceeded.
|
||||
*/
|
||||
|
||||
num_open.rlim_cur = FD_SETSIZE - SAFETY_MARGIN;
|
||||
if(num_open.rlim_max > num_open.rlim_cur) {
|
||||
msnprintf(strbuff, sizeof(strbuff), "select limit is FD_SETSIZE %d",
|
||||
FD_SETSIZE);
|
||||
store_errmsg(strbuff, 0);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
close_file_descriptors();
|
||||
free(memchunk);
|
||||
return -8;
|
||||
}
|
||||
|
||||
num_open.rlim_cur = FD_SETSIZE - SAFETY_MARGIN;
|
||||
for(rl.rlim_cur = 0;
|
||||
rl.rlim_cur < num_open.rlim_max;
|
||||
rl.rlim_cur++) {
|
||||
if((fd[rl.rlim_cur] > 0) &&
|
||||
((unsigned int)fd[rl.rlim_cur] > num_open.rlim_cur)) {
|
||||
msnprintf(strbuff, sizeof(strbuff), "select limit is FD_SETSIZE %d",
|
||||
FD_SETSIZE);
|
||||
store_errmsg(strbuff, 0);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
close_file_descriptors();
|
||||
free(memchunk);
|
||||
return -9;
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* using a FD_SETSIZE bound select() */
|
||||
|
||||
/*
|
||||
* Old or 'backwards compatible' implementations of stdio do not allow
|
||||
* handling of streams with an underlying file descriptor number greater
|
||||
* than 255, even when allowing high numbered file descriptors for sockets.
|
||||
* At this point we have a big number of file descriptors which have been
|
||||
* opened using dup(), so lets test the stdio implementation and discover
|
||||
* if it is capable of fopen()ing some additional files.
|
||||
*/
|
||||
|
||||
if(!fopen_works()) {
|
||||
rlim2str(strbuff1, sizeof(strbuff1), num_open.rlim_max);
|
||||
msnprintf(strbuff, sizeof(strbuff), "fopen fails with %s fds open",
|
||||
strbuff1);
|
||||
fprintf(stderr, "%s\n", msgbuff);
|
||||
msnprintf(strbuff, sizeof(strbuff), "fopen fails with lots of fds open");
|
||||
store_errmsg(strbuff, 0);
|
||||
close_file_descriptors();
|
||||
free(memchunk);
|
||||
return -10;
|
||||
}
|
||||
|
||||
/* free the chunk of memory we were reserving so that it
|
||||
becomes becomes available to the test */
|
||||
|
||||
free(memchunk);
|
||||
|
||||
/* close file descriptors unless instructed to keep them */
|
||||
|
||||
if(!keep_open) {
|
||||
close_file_descriptors();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int test(char *URL)
|
||||
{
|
||||
CURLcode res;
|
||||
CURL *curl;
|
||||
|
||||
if(!strcmp(URL, "check")) {
|
||||
/* used by the test script to ask if we can run this test or not */
|
||||
if(rlimit(FALSE)) {
|
||||
fprintf(stdout, "rlimit problem: %s\n", msgbuff);
|
||||
return 1;
|
||||
}
|
||||
return 0; /* sure, run this! */
|
||||
}
|
||||
|
||||
if(rlimit(TRUE)) {
|
||||
/* failure */
|
||||
return TEST_ERR_MAJOR_BAD;
|
||||
}
|
||||
|
||||
/* run the test with the bunch of open file descriptors
|
||||
and close them all once the test is over */
|
||||
|
||||
if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
|
||||
fprintf(stderr, "curl_global_init() failed\n");
|
||||
close_file_descriptors();
|
||||
return TEST_ERR_MAJOR_BAD;
|
||||
}
|
||||
|
||||
curl = curl_easy_init();
|
||||
if(!curl) {
|
||||
fprintf(stderr, "curl_easy_init() failed\n");
|
||||
close_file_descriptors();
|
||||
curl_global_cleanup();
|
||||
return TEST_ERR_MAJOR_BAD;
|
||||
}
|
||||
|
||||
test_setopt(curl, CURLOPT_URL, URL);
|
||||
test_setopt(curl, CURLOPT_HEADER, 1L);
|
||||
|
||||
res = curl_easy_perform(curl);
|
||||
|
||||
test_cleanup:
|
||||
|
||||
close_file_descriptors();
|
||||
curl_easy_cleanup(curl);
|
||||
curl_global_cleanup();
|
||||
|
||||
return (int)res;
|
||||
}
|
||||
|
||||
#else /* defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT) */
|
||||
|
||||
int test(char *URL)
|
||||
{
|
||||
(void)URL;
|
||||
printf("system lacks necessary system function(s)");
|
||||
return 1; /* skip test */
|
||||
}
|
||||
|
||||
#endif /* defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT) */
|
||||
Reference in New Issue
Block a user