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curl/tests/libtest/lib518.c
Daniel Stenberg 113531432a make the "check" actually open all those file desciptors as well to make sure
it works, as it has proved to not work in some cases (like on Tor Arntsen's
AIX 5100-06 xlc 5.0 --disable-shared runs).
2004-12-01 10:34:46 +00:00

133 lines
2.6 KiB
C

#include "test.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef UNISTD_H
#include <unistd.h>
#endif
#include <mprintf.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifndef FD_SETSIZE
#error "this test requires FD_SETSIZE"
#endif
#define NUM_OPEN (FD_SETSIZE + 10)
#define NUM_NEEDED (NUM_OPEN + 16)
#if defined(WIN32) || 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[NUM_OPEN];
static int rlimit(void)
{
int i;
struct rlimit rl;
fprintf(stderr, "NUM_OPEN: %d\n", NUM_OPEN);
fprintf(stderr, "NUM_NEEDED: %d\n", NUM_NEEDED);
/* get open file limits */
if (getrlimit(RLIMIT_NOFILE, &rl) == -1) {
fprintf(stderr, "warning: getrlimit: failed to get RLIMIT_NOFILE\n");
return -1;
}
/* check that hard limit is high enough */
if (rl.rlim_max < NUM_NEEDED) {
fprintf(stderr, "warning: RLIMIT_NOFILE hard limit %d < %d\n",
(int)rl.rlim_max, NUM_NEEDED);
return -2;
}
/* increase soft limit if needed */
if (rl.rlim_cur < NUM_NEEDED) {
rl.rlim_cur = NUM_NEEDED;
if (setrlimit(RLIMIT_NOFILE, &rl) == -1) {
fprintf(stderr, "warning: setrlimit: failed to set RLIMIT_NOFILE\n");
return -3;
}
}
/* open a dummy descriptor */
fd[0] = open(DEV_NULL, O_RDONLY);
if (fd[0] == -1) {
fprintf(stderr, "open: failed to open %s\n", DEV_NULL);
return -4;
}
/* create a bunch of file descriptors */
for (i = 1; i < NUM_OPEN; i++) {
fd[i] = dup(fd[0]);
if (fd[i] == -1) {
fprintf(stderr, "dup: attempt #%i failed\n", i);
for (i--; i >= 0; i--)
close(fd[i]);
return -5;
}
}
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()) {
printf("rlimit problems\n");
return 1;
}
return 0; /* sure, run this! */
}
if(rlimit())
/* failure */
return 100;
curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, URL);
curl_easy_setopt(curl, CURLOPT_HEADER, TRUE);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
/* we never close the file descriptors */
return (int)res;
}
#else
/* system lacks getrlimit() and/or setrlimit() */
int test(char *URL)
{
(void)URL;
printf("system lacks necessary system function(s)");
return 1;
}
#endif