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Another approach to disabling SHM.

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default 2024-05-21 19:08:33 +02:00
parent cdfaf6dc57
commit ed973241f4
1 changed files with 23 additions and 23 deletions
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46
httpd.c
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@ -653,29 +653,6 @@ void term_handler(int s)
}
#ifdef WITHOUT_SHM
/* dummy versions */
int shm_open(const char *name, int flags, mode_t mode)
{
(void)name;
(void)flags;
(void)mode;
errno = ENOTSUP;
return -1;
}
int shm_unlink(const char *name)
{
(void)name;
return -1;
}
#endif
srv_state *srv_state_op(xs_str **fname, int op)
/* opens or deletes the shared memory object */
{
@ -687,6 +664,13 @@ srv_state *srv_state_op(xs_str **fname, int op)
switch (op) {
case 0: /* open for writing */
#ifdef WITHOUT_SHM
errno = ENOTSUP;
#else
if ((fd = shm_open(*fname, O_CREAT | O_RDWR, 0666)) != -1) {
ftruncate(fd, sizeof(*ss));
@ -697,6 +681,8 @@ srv_state *srv_state_op(xs_str **fname, int op)
close(fd);
}
#endif
if (ss == NULL) {
/* shared memory error: just create a plain structure */
srv_log(xs_fmt("warning: shm object error (%s)", strerror(errno)));
@ -710,6 +696,13 @@ srv_state *srv_state_op(xs_str **fname, int op)
break;
case 1: /* open for reading */
#ifdef WITHOUT_SHM
errno = ENOTSUP;
#else
if ((fd = shm_open(*fname, O_RDONLY, 0666)) != -1) {
if ((ss = mmap(0, sizeof(*ss), PROT_READ, MAP_SHARED, fd, 0)) == MAP_FAILED)
ss = NULL;
@ -717,6 +710,8 @@ srv_state *srv_state_op(xs_str **fname, int op)
close(fd);
}
#endif
if (ss == NULL) {
/* shared memory error */
srv_log(xs_fmt("error: shm object error (%s) server not running?", strerror(errno)));
@ -734,9 +729,14 @@ srv_state *srv_state_op(xs_str **fname, int op)
break;
case 2: /* unlink */
#ifndef WITHOUT_SHM
if (*fname)
shm_unlink(*fname);
#endif
break;
}