Fix memory issues flagged by valgrind. These changes bring the property service in line with Android [1] apart from some minor build differences. [1] https://android-review.googlesource.com/#/c/153580/ Signed-off-by: Richard Haines <richard_c_haines@xxxxxxxxxxxxxx> --- libselinux/src/label_android_property.c | 62 ++++++++++++++++++--------------- 1 file changed, 34 insertions(+), 28 deletions(-) diff --git a/libselinux/src/label_android_property.c b/libselinux/src/label_android_property.c index dadb160..1160777 100644 --- a/libselinux/src/label_android_property.c +++ b/libselinux/src/label_android_property.c @@ -16,7 +16,7 @@ /* A property security context specification. */ typedef struct spec { struct selabel_lookup_rec lr; /* holds contexts for lookup result */ - char *property_key; /* property key string */ + char *property_key; /* property key string */ } spec_t; /* Our stored configuration */ @@ -56,21 +56,23 @@ static int nodups_specs(struct saved_data *data, const char *path) for (ii = 0; ii < data->nspec; ii++) { curr_spec = &spec_arr[ii]; for (jj = ii + 1; jj < data->nspec; jj++) { - if (!strcmp(spec_arr[jj].property_key, curr_spec->property_key)) { + if (!strcmp(spec_arr[jj].property_key, + curr_spec->property_key)) { rc = -1; errno = EINVAL; - if (strcmp(spec_arr[jj].lr.ctx_raw, curr_spec->lr.ctx_raw)) { - selinux_log(SELINUX_ERROR, - "%s: Multiple different specifications for %s (%s and %s).\n", - path, - curr_spec->property_key, - spec_arr[jj].lr.ctx_raw, - curr_spec->lr.ctx_raw); + if (strcmp(spec_arr[jj].lr.ctx_raw, + curr_spec->lr.ctx_raw)) { + selinux_log + (SELINUX_ERROR, + "%s: Multiple different specifications for %s (%s and %s).\n", + path, curr_spec->property_key, + spec_arr[jj].lr.ctx_raw, + curr_spec->lr.ctx_raw); } else { - selinux_log(SELINUX_ERROR, - "%s: Multiple same specifications for %s.\n", - path, - curr_spec->property_key); + selinux_log + (SELINUX_ERROR, + "%s: Multiple same specifications for %s.\n", + path, curr_spec->property_key); } } } @@ -95,32 +97,35 @@ static int process_line(struct selabel_handle *rec, selinux_log(SELINUX_WARNING, "%s: line %u is missing fields, skipping\n", path, lineno); + free(prop); return 0; } - if (pass == 1) { + if (pass == 0) { + free(prop); + free(context); + } else if (pass == 1) { /* On the second pass, process and store the specification in spec. */ - spec_arr[nspec].property_key = strdup(prop); + spec_arr[nspec].property_key = prop; if (!spec_arr[nspec].property_key) { selinux_log(SELINUX_WARNING, - "%s: out of memory at line %u on prop %s\n", + "%s: out of memory at line %d on prop %s\n", path, lineno, prop); - return -1; - + return -1; } - spec_arr[nspec].lr.ctx_raw = strdup(context); + spec_arr[nspec].lr.ctx_raw = context; if (!spec_arr[nspec].lr.ctx_raw) { selinux_log(SELINUX_WARNING, - "%s: out of memory at line %u on context %s\n", + "%s: out of memory at line %d on context %s\n", path, lineno, context); - return -1; + return -1; } if (rec->validating) { if (selabel_validate(rec, &spec_arr[nspec].lr) < 0) { selinux_log(SELINUX_WARNING, - "%s: line %u has invalid context %s\n", + "%s: line %d has invalid context %s\n", path, lineno, spec_arr[nspec].lr.ctx_raw); } } @@ -149,7 +154,7 @@ static int init(struct selabel_handle *rec, struct selinux_opt *opts, break; } - if (!path) + if (!path) return -1; /* Open the specification file. */ @@ -174,7 +179,8 @@ static int init(struct selabel_handle *rec, struct selinux_opt *opts, while (fgets(line_buf, sizeof line_buf - 1, fp) && data->nspec < maxnspec) { - if (process_line(rec, path, line_buf, pass, ++lineno) != 0) + if (process_line(rec, path, line_buf, pass, ++lineno) + != 0) goto finish; } @@ -186,7 +192,6 @@ static int init(struct selabel_handle *rec, struct selinux_opt *opts, } if (pass == 0) { - if (data->nspec == 0) { status = 0; goto finish; @@ -234,7 +239,7 @@ static void closef(struct selabel_handle *rec) static struct selabel_lookup_rec *lookup(struct selabel_handle *rec, const char *key, - int __attribute__ ((unused)) type) + int __attribute__((unused)) type) { struct saved_data *data = (struct saved_data *)rec->data; spec_t *spec_arr = data->spec_arr; @@ -267,12 +272,13 @@ finish: return ret; } -static void stats(struct selabel_handle __attribute__ ((unused)) * rec) +static void stats(struct selabel_handle __attribute__((unused)) *rec) { selinux_log(SELINUX_WARNING, "'stats' functionality not implemented.\n"); } -int selabel_property_init(struct selabel_handle *rec, struct selinux_opt *opts, +int selabel_property_init(struct selabel_handle *rec, + struct selinux_opt *opts, unsigned nopts) { struct saved_data *data; -- 2.1.0 _______________________________________________ Selinux mailing list Selinux@xxxxxxxxxxxxx To unsubscribe, send email to Selinux-leave@xxxxxxxxxxxxx. To get help, send an email containing "help" to Selinux-request@xxxxxxxxxxxxx.
