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fuse: fix lookupx name buffer including stray path-separator byte #172

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Merged
hbirth merged 1 commit into from
Jun 9, 2026
Merged

fuse: fix lookupx name buffer including stray path-separator byte #172

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12 changes: 8 additions & 4 deletions fs/fuse/dir.c
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Original file line number Diff line number Diff line change
Expand Up @@ -212,13 +212,15 @@ static int fuse_do_lookupx(struct fuse_mount *fm, u64 nodeid,
goto fallback;

args.opcode = FUSE_LOOKUPX;
args.in_numargs = 3;
args.in_numargs = 4;
args.in_args[0].size = sizeof(inarg);
args.in_args[0].value = &inarg;
args.in_args[1].size = 0;
args.in_args[1].value = NULL;
args.in_args[2].size = name->len + 1;
args.in_args[2].size = name->len;
args.in_args[2].value = name->name;
args.in_args[3].size = 1;
args.in_args[3].value = "";
args.out_numargs = 1;
args.out_args[0].size = sizeof(struct fuse_lookupx_out);
args.out_args[0].value = ext_out;
Expand All @@ -236,10 +238,12 @@ static int fuse_do_lookupx(struct fuse_mount *fm, u64 nodeid,

fallback:
args.opcode = FUSE_LOOKUP;
args.in_numargs = 2;
args.in_numargs = 3;
fuse_set_zero_arg0(&args);
args.in_args[1].size = name->len + 1;
args.in_args[1].size = name->len;
args.in_args[1].value = name->name;
args.in_args[2].size = 1;
args.in_args[2].value = "";
args.out_numargs = 1;
args.out_args[0].size = sizeof(struct fuse_entry_out);
args.out_args[0].value = &ext_out->entry;
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