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