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shmget: Make shmobj underwent IPC_RMID invisible to shmget

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Refs: #926
Change-Id: I16120623b581da5d5d484fd05d5111788c8ad5e2
This commit is contained in:
Tomoki Shirasawa
2018-06-11 11:40:48 +09:00
committed by Masamichi Takagi
parent 229b041320
commit 9bb8076dc0
7 changed files with 170 additions and 15 deletions
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84
test/issues/926/C926.c
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@@ -12,6 +12,80 @@
#include <sys/ipc.h>
#include <sys/shm.h>
void
additional_test()
{
key_t key;
int shmid1;
int shmid2;
int shmid3;
int *sp1;
int *sp2;
int *sp3;
int *sp4;
struct shmid_ds buf;
key = ftok("/", 1);
if ((shmid1 = shmget(key, 4096, IPC_CREAT | 0660)) == -1) {
perror("shmget 1");
exit(1);
}
if ((sp1 = shmat(shmid1, NULL, 0)) == (void *)-1) {
perror("shmat 1");
exit(1);
}
if (shmctl(shmid1, IPC_RMID, &buf) == -1) {
perror("RMID 1");
exit(1);
}
*sp1 = 1;
if ((shmid2 = shmget(key, 4096, IPC_CREAT | 0660)) == -1) {
perror("shmget 2");
exit(1);
}
if ((sp2 = shmat(shmid2, NULL, 0)) == (void *)-1) {
perror("shmat 2");
exit(1);
}
*sp2 = 2;
printf("C926T09... ");
if ((shmid3 = shmget(key, 4096, IPC_CREAT | 0660)) == -1) {
perror("shmget 3");
exit(1);
}
if ((sp3 = shmat(shmid3, NULL, 0)) == (void *)-1) {
perror("shmat 3");
exit(1);
}
if (shmid3 == shmid2 && *sp3 == 2) {
printf("OK\n");
}
else {
if (shmid3 != shmid2) {
printf("NG shmid %d!=%d\n", shmid3, shmid2);
}
else {
printf("NG valie=%d\n", *sp3);
}
}
printf("C926T10... ");
if ((sp4 = shmat(shmid1, NULL, 0)) == (void *)-1) {
perror("shmat 4");
exit(1);
}
if (*sp4 == 1) {
printf("OK\n");
}
else {
printf("NG valie=%d\n", *sp4);
}
shmctl(shmid2, IPC_RMID, &buf);
}
int
main(int argc, char **argv)
{
@@ -85,6 +159,7 @@ main(int argc, char **argv)
sp = shmat(shmid, NULL, 0);
st = *sp == valid3? 1: 0;
shmdt(sp);
shmctl(shmid, IPC_RMID, &buf);
exit(st);
}
@@ -150,6 +225,7 @@ main(int argc, char **argv)
sp = shmat(shmid, NULL, 0);
st = *sp == valid3? 1: 0;
shmdt(sp);
shmctl(shmid, IPC_RMID, &buf);
exit(st);
}
@@ -223,6 +299,7 @@ main(int argc, char **argv)
sp = shmat(shmid, NULL, 0);
st = *sp == valid3? 1: 0;
shmdt(sp);
shmctl(shmid, IPC_RMID, &buf);
exit(st);
}
@@ -294,6 +371,7 @@ main(int argc, char **argv)
sp = shmat(shmid, NULL, 0);
st = *sp == valid3? 1: 0;
shmdt(sp);
shmctl(shmid, IPC_RMID, &buf);
exit(st);
}
@@ -362,6 +440,7 @@ main(int argc, char **argv)
sp = shmat(shmid, NULL, 0);
st = *sp == valid3? 1: 0;
shmdt(sp);
shmctl(shmid, IPC_RMID, &buf);
exit(st);
}
@@ -428,6 +507,7 @@ main(int argc, char **argv)
sp = shmat(shmid, NULL, 0);
st = *sp == valid3? 1: 0;
shmdt(sp);
shmctl(shmid, IPC_RMID, &buf);
exit(st);
}
@@ -499,6 +579,7 @@ main(int argc, char **argv)
sp = shmat(shmid, NULL, 0);
st = *sp == valid3? 1: 0;
shmdt(sp);
shmctl(shmid, IPC_RMID, &buf);
exit(st);
}
@@ -569,6 +650,7 @@ main(int argc, char **argv)
sp = shmat(shmid, NULL, 0);
st = *sp == valid3? 1: 0;
shmdt(sp);
shmctl(shmid, IPC_RMID, &buf);
exit(st);
}
@@ -583,5 +665,7 @@ main(int argc, char **argv)
printf("NG\n");
}
additional_test();
exit(0);
}