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Ensure io requests are always capped at 0x7ffff000

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This gives us the Linux behavior across platforms.

Fixes #1189
This commit is contained in:
Justine Tunney 2024-05-26 16:53:13 -07:00
parent 6cf9b9e0fc
commit af3f62a71a
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GPG key ID: BE714B4575D6E328
10 changed files with 268 additions and 81 deletions
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26
test/posix/fread3gb_test.c
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@ -30,10 +30,14 @@ int setup(void) {
return 2;
if (pwrite(fd, "a", 1, 0) != 1)
return 3;
if (pwrite(fd, "z", 1, SIZE - 1) != 1)
if (pwrite(fd, "b", 1, 0x7fffefff) != 1)
return 4;
if (close(fd))
if (pwrite(fd, "c", 1, 0x7ffff000) != 1)
return 5;
if (pwrite(fd, "z", 1, SIZE - 1) != 1)
return 6;
if (close(fd))
return 7;
return 0;
}
@ -42,17 +46,21 @@ int test(void) {
char *buf;
size_t rc;
if (!(f = fopen(path, "r")))
return 6;
if (!(buf = malloc(SIZE)))
return 7;
if ((rc = fread(buf, SIZE, 1, f)) != 1)
return 8;
if (buf[0] != 'a')
if (!(buf = malloc(SIZE)))
return 9;
if (buf[SIZE - 1] != 'z')
if ((rc = fread(buf, SIZE, 1, f)) != 1)
return 10;
if (fclose(f))
if (buf[0] != 'a')
return 11;
if (buf[0x7fffefff] != 'b')
return 12;
if (buf[0x7ffff000] != 'c')
return 13;
if (buf[SIZE - 1] != 'z')
return 14;
if (fclose(f))
return 15;
return 0;
}