- teach rpm how to read /proc files

[packages/rpm.git] / rpmio-read-proc-files.patch

--- rpm-4.16.0/rpmio/rpmio.c~	2020-08-27 15:13:08.000000000 +0200
+++ rpm-4.16.0/rpmio/rpmio.c	2020-11-08 21:31:26.311430982 +0100
@@ -1709,6 +1709,22 @@
 	}
 	b[blen] = '\0';
     }
+#if defined(__linux__)
+    /* XXX st->st_size = 0 for /proc files on linux, see stat(2). */
+    /* XXX glibc mmap'd libio no workie for /proc files on linux?!? */
+    else if (!strncmp(fn, "/proc/", sizeof("/proc/")-1)) {
+	blen = blenmax;
+	b = xmalloc(blen+1);
+	b[0] = '\0';
+
+	size = read(Fileno(fd), b, blen);
+	if (size < 0) {
+		rc = 1;
+		goto exit;
+	}
+	blen = size;
+    }
+#endif
 
 exit:
     if (fd) (void) Fclose(fd);