forked from Minki/linux
isofs: handle large user and group ID
If uid or gid of mount options is larger than INT_MAX, isofs_fill_super
will return -EINVAL.
The problem can be encountered by a domain user or reproduced via:
mount -o loop,uid=2147483648 ubuntu-16.04.6-server-amd64.iso /mnt
This can be fixed as commit 233a01fa9c
("fuse: handle large user and
group ID").
Link: https://lore.kernel.org/r/20210129045315.10375-1-bingjingc@synology.com
Reviewed-by: Robbie Ko <robbieko@synology.com>
Reviewed-by: Chung-Chiang Cheng <cccheng@synology.com>
Signed-off-by: BingJing Chang <bingjingc@synology.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
parent
01531ac354
commit
a0b3cb71a1
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@ -339,6 +339,7 @@ static int parse_options(char *options, struct iso9660_options *popt)
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{
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{
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char *p;
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char *p;
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int option;
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int option;
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unsigned int uv;
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popt->map = 'n';
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popt->map = 'n';
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popt->rock = 1;
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popt->rock = 1;
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@ -434,17 +435,17 @@ static int parse_options(char *options, struct iso9660_options *popt)
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case Opt_ignore:
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case Opt_ignore:
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break;
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break;
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case Opt_uid:
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case Opt_uid:
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if (match_int(&args[0], &option))
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if (match_uint(&args[0], &uv))
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return 0;
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return 0;
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popt->uid = make_kuid(current_user_ns(), option);
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popt->uid = make_kuid(current_user_ns(), uv);
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if (!uid_valid(popt->uid))
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if (!uid_valid(popt->uid))
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return 0;
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return 0;
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popt->uid_set = 1;
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popt->uid_set = 1;
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break;
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break;
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case Opt_gid:
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case Opt_gid:
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if (match_int(&args[0], &option))
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if (match_uint(&args[0], &uv))
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return 0;
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return 0;
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popt->gid = make_kgid(current_user_ns(), option);
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popt->gid = make_kgid(current_user_ns(), uv);
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if (!gid_valid(popt->gid))
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if (!gid_valid(popt->gid))
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return 0;
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return 0;
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popt->gid_set = 1;
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popt->gid_set = 1;
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