termux-packages/packages/uftrace/libmcount-record.c.patch

47 lines
1.3 KiB
Diff

+++ ./libmcount/record.c 2019-08-26 14:43:15.836981805 +0300
@@ -23,6 +23,44 @@
#define ARG_STR_MAX 98
+static int shm_open(const char *name, int oflag, mode_t mode) {
+ size_t namelen;
+ char *fname;
+ int fd;
+
+ /* Construct the filename. */
+ while (name[0] == '/') ++name;
+
+ if (name[0] == '\0') {
+ /* The name "/" is not supported. */
+ errno = EINVAL;
+ return -1;
+ }
+
+ namelen = strlen(name);
+ fname = (char *) alloca(sizeof("/data/data/com.termux/files/usr/tmp/") - 1 + namelen + 1);
+ memcpy(fname, "/data/data/com.termux/files/usr/tmp/", sizeof("/data/data/com.termux/files/usr/tmp/") - 1);
+ memcpy(fname + sizeof("/data/data/com.termux/files/usr/tmp/") - 1, name, namelen + 1);
+
+ fd = open(fname, oflag, mode);
+ if (fd != -1) {
+ /* We got a descriptor. Now set the FD_CLOEXEC bit. */
+ int flags = fcntl(fd, F_GETFD, 0);
+ flags |= FD_CLOEXEC;
+ flags = fcntl(fd, F_SETFD, flags);
+
+ if (flags == -1) {
+ /* Something went wrong. We cannot return the descriptor. */
+ int save_errno = errno;
+ close(fd);
+ fd = -1;
+ errno = save_errno;
+ }
+ }
+
+ return fd;
+}
+
static struct mcount_shmem_buffer *allocate_shmem_buffer(char *sess_id, size_t size,
int tid, int idx)
{