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Improve error reporting when the tmux /tmp directory cannot be created

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or used, GitHub issue 2765 from Uwe Kleine-Koenig.
This commit is contained in:
nicm 2021-07-06 08:26:00 +00:00
parent 35c2958ae4
commit 32f2d9d089
1 changed files with 10 additions and 5 deletions
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15
tmux.c
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@ -211,16 +211,22 @@ make_label(const char *label, char **cause)
free(paths);
xasprintf(&base, "%s/tmux-%ld", path, (long)uid);
if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST) {
xasprintf(cause, "couldn't create directory %s (%s)", base,
strerror(errno));
goto fail;
if (lstat(base, &sb) != 0)
}
if (lstat(base, &sb) != 0) {
xasprintf(cause, "couldn't read directory %s (%s)", base,
strerror(errno));
goto fail;
}
if (!S_ISDIR(sb.st_mode)) {
errno = ENOTDIR;
xasprintf(cause, "%s is not a directory", base);
goto fail;
}
if (sb.st_uid != uid || (sb.st_mode & S_IRWXO) != 0) {
errno = EACCES;
xasprintf(cause, "directory %s has unsafe permissions", base);
goto fail;
}
xasprintf(&path, "%s/%s", base, label);
@ -228,7 +234,6 @@ make_label(const char *label, char **cause)
return (path);
fail:
xasprintf(cause, "error creating %s (%s)", base, strerror(errno));
free(base);
return (NULL);
}