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Plug an fd leak by using autoh_freeall(3).

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Refuse to run unless root.
Check in /etc, /usr/local/etc and ./ for the "autotab" configuration
file.
Add more debug statements.
This commit is contained in:
Alfred Perlstein 2004-09-09 01:26:11 +00:00
parent dc45e5b846
commit 9f0cd8478f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=134969
1 changed files with 36 additions and 8 deletions
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44
share/examples/autofs/driver/autodriver.c
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@ -114,15 +114,26 @@ parsetab(void)
char *cp, *p, *line, *opt;
size_t len;
struct autoentry *ent;
int lineno, x, gotopt;
int i, lineno, x, gotopt;
const char *expecting = "expecting 'direct', 'indirect' or 'browse'";
const char *tabfiles[] = {
"/etc/autotab", "/usr/local/etc/autotab", "./autotab", NULL
};
tab = "autotab";
lineno = 0;
for (i = 0; (tab = tabfiles[i]) != NULL; i++) {
tab = tabfiles[i];
fp = fopen(tab, "r");
if (fp == NULL)
warn("fopen %s", tab);
if (fp != NULL)
break;
}
if (fp == NULL) {
err(1, "no config file available.");
}
fp = fopen(tab, "r");
if (fp == NULL)
err(1, "fopen %s", tab);
fprintf(stderr, "using config file: %s\n", tab);
while ((cp = fgetln(fp, &len)) != NULL) {
lineno++;
@ -280,6 +291,7 @@ doreq(autoh_t ah, autoreq_t req)
struct autoentry *ent;
int error;
int mcmp;
int xid;
const char *mnt;
mnt = autoh_mp(ah);
@ -293,6 +305,8 @@ doreq(autoh_t ah, autoreq_t req)
(int)strlen(ent->ae_mnt),
(int)strlen(autoreq_getpath(req)),
(int)strlen(ent->ae_path));
autoreq_getxid(req, &xid);
fprintf(stderr, "req xid %d\n", xid);
if ((mcmp = strcmp(mnt, ent->ae_mnt)) != 0) {
fprintf(stderr, "mcmp = %d\n", mcmp);
continue;
@ -322,8 +336,11 @@ mount_indirect(req, ent)
char *path, *cmd;
int error, x;
if (ent->ae_indirect != 1)
if (ent->ae_indirect != 1) {
fprintf(stderr, "not indirect.\n");
return (0);
}
fprintf(stderr, "indirect mount...\n");
/*
* handle lookups, fake all stat(2) requests... this is bad,
* but we're a driver so we don't care...
@ -333,14 +350,19 @@ mount_indirect(req, ent)
case AUTOREQ_OP_LOOKUP:
break;
case AUTOREQ_OP_STAT:
fprintf(stderr, "stat\n");
return (1);
default:
fprintf(stderr, "unknown\n");
return (0);
}
if (stat(ent->ae_fullpath, &sb))
return (0);
if (sb.st_ino != autoreq_getdirino(req))
if (sb.st_ino != autoreq_getdirino(req)) {
fprintf(stderr, "st_ino %d != dirino %d\n",
(int)sb.st_ino, (int)autoreq_getdirino(req));
return (0);
}
x = asprintf(&path, "%s/%s", ent->ae_fullpath, autoreq_getpath(req));
if (x > PATH_MAX) {
autoreq_seterrno(req, ENAMETOOLONG);
@ -377,8 +399,11 @@ mount_direct(req, ent)
char *cmd;
int error;
if (ent->ae_direct != 1)
if (ent->ae_direct != 1) {
fprintf(stderr, "not direct.\n");
return (0);
}
fprintf(stderr, "direct mount...\n");
/*
* handle lookups, fake all stat(2) requests... this is bad,
* but we're a driver so we don't care...
@ -496,6 +521,7 @@ eventloop(void)
for (i = 0; i < cnt; i++) {
dotheneedful(array[i]);
}
autoh_freeall(array);
}
}
@ -503,6 +529,8 @@ int
main(int argc __unused, char **argv __unused)
{
if (getuid() != 0)
errx(1, "autodriver needs to be run as root to work.");
parsetab();
populate_tab();
eventloop();