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kernel: optimize uid list reading

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weishu
2023-12-27 19:33:25 +08:00
parent 26da7d590e
commit fe7f509f9d
1 changed files with 4 additions and 4 deletions
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8
kernel/uid_observer.c
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@@ -56,7 +56,7 @@ static void do_update_uid(struct work_struct *work)
char chr = 0; char chr = 0;
loff_t pos = 0; loff_t pos = 0;
loff_t line_start = 0; loff_t line_start = 0;
char buf[128]; char buf[KSU_MAX_PACKAGE_NAME];
for (;;) { for (;;) {
ssize_t count = ssize_t count =
ksu_kernel_read_compat(fp, &chr, sizeof(chr), &pos); ksu_kernel_read_compat(fp, &chr, sizeof(chr), &pos);
@@ -69,7 +69,7 @@ static void do_update_uid(struct work_struct *work)
&line_start); &line_start);
struct uid_data *data = struct uid_data *data =
kmalloc(sizeof(struct uid_data), GFP_ATOMIC); kzalloc(sizeof(struct uid_data), GFP_ATOMIC);
if (!data) { if (!data) {
goto out; goto out;
} }
@@ -80,13 +80,13 @@ static void do_update_uid(struct work_struct *work)
char *uid = strsep(&tmp, delim); char *uid = strsep(&tmp, delim);
if (!uid || !package) { if (!uid || !package) {
pr_err("update_uid: package or uid is NULL!\n"); pr_err("update_uid: package or uid is NULL!\n");
continue; break;
} }
u32 res; u32 res;
if (kstrtou32(uid, 10, &res)) { if (kstrtou32(uid, 10, &res)) {
pr_err("update_uid: uid parse err\n"); pr_err("update_uid: uid parse err\n");
continue; break;
} }
data->uid = res; data->uid = res;
strncpy(data->package, package, KSU_MAX_PACKAGE_NAME); strncpy(data->package, package, KSU_MAX_PACKAGE_NAME);