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don't panic if out of disk space when extending a directory.

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This commit is contained in:
Robert Morris 2022-08-23 08:23:12 -04:00
parent cd6207a972
commit dc405cdb7b
3 changed files with 39 additions and 3 deletions
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30
user/usertests.c
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@ -2738,6 +2738,36 @@ diskfull(char *s)
close(fd);
}
// now that there are no free blocks, test that dirlink()
// merely fails (doesn't panic) if it can't extend
// directory content.
int nzz = 128;
for(int i = 0; i < nzz; i++){
char name[32];
name[0] = 'z';
name[1] = 'z';
name[2] = '0' + (i / 32);
name[3] = '0' + (i % 32);
name[4] = '\0';
unlink(name);
int fd = open(name, O_CREATE|O_RDWR|O_TRUNC);
if(fd < 0){
printf("%s: could not create file %s\n", s, name);
break;
}
close(fd);
}
for(int i = 0; i < nzz; i++){
char name[32];
name[0] = 'z';
name[1] = 'z';
name[2] = '0' + (i / 32);
name[3] = '0' + (i % 32);
name[4] = '\0';
unlink(name);
}
for(int i = 0; i < fi; i++){
char name[32];
name[0] = 'b';