X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-ust-elf.c;h=5de3561fbeefcc71a56522f8763fb628dbdcede3;hb=fb31eb73d8a4a6d9784ed5c335b7fa3b9684108c;hp=a496841adb8804d6182ce901f52e9835828c5744;hpb=2df586a6d8136c08cf5f0b1210a268d6c37601de;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-ust-elf.c b/liblttng-ust/lttng-ust-elf.c
index a496841a..5de3561f 100644
--- a/liblttng-ust/lttng-ust-elf.c
+++ b/liblttng-ust/lttng-ust-elf.c
@@ -18,15 +18,19 @@
 
 #define _GNU_SOURCE
 #define _LGPL_SOURCE
+#include <fcntl.h>
 #include <helper.h>
-#include <string.h>
 #include <lttng/align.h>
 #include <lttng/ust-elf.h>
-#include <sys/types.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
 #include <sys/stat.h>
-#include <fcntl.h>
+#include <sys/types.h>
 #include <unistd.h>
-#include <stdbool.h>
+
+#include <ust-fd.h>
+
 #include "lttng-tracer-core.h"
 
 #define BUF_LEN	4096
@@ -242,22 +246,41 @@ struct lttng_ust_elf *lttng_ust_elf_create(const char *path)
 	uint8_t e_ident[EI_NIDENT];
 	struct lttng_ust_elf_shdr *section_names_shdr;
 	struct lttng_ust_elf *elf = NULL;
+	int ret, fd;
 
 	elf = zmalloc(sizeof(struct lttng_ust_elf));
 	if (!elf) {
 		goto error;
 	}
 
+	/* Initialize fd field to -1. 0 is a valid fd number */
+	elf->fd = -1;
+
 	elf->path = strdup(path);
 	if (!elf->path) {
 		goto error;
 	}
 
-	elf->fd = open(elf->path, O_RDONLY | O_CLOEXEC);
-	if (elf->fd < 0) {
+	lttng_ust_lock_fd_tracker();
+	fd = open(elf->path, O_RDONLY | O_CLOEXEC);
+	if (fd < 0) {
+		lttng_ust_unlock_fd_tracker();
 		goto error;
 	}
 
+	ret = lttng_ust_add_fd_to_tracker(fd);
+	if (ret < 0) {
+		ret = close(fd);
+		if (ret) {
+			PERROR("close on elf->fd");
+		}
+		ret = -1;
+		lttng_ust_unlock_fd_tracker();
+		goto error;
+	}
+	elf->fd = ret;
+	lttng_ust_unlock_fd_tracker();
+
 	if (lttng_ust_read(elf->fd, e_ident, EI_NIDENT) < EI_NIDENT) {
 		goto error;
 	}
@@ -309,16 +332,7 @@ struct lttng_ust_elf *lttng_ust_elf_create(const char *path)
 	return elf;
 
 error:
-	if (elf) {
-		free(elf->ehdr);
-		if (elf->fd >= 0) {
-			if (close(elf->fd)) {
-				abort();
-			}
-		}
-		free(elf->path);
-		free(elf);
-	}
+	lttng_ust_elf_destroy(elf);
 	return NULL;
 }
 
@@ -339,14 +353,25 @@ uint8_t lttng_ust_elf_is_pic(struct lttng_ust_elf *elf)
  */
 void lttng_ust_elf_destroy(struct lttng_ust_elf *elf)
 {
+	int ret;
+
 	if (!elf) {
 		return;
 	}
 
-	free(elf->ehdr);
-	if (close(elf->fd)) {
-		abort();
+	if (elf->fd >= 0) {
+		lttng_ust_lock_fd_tracker();
+		ret = close(elf->fd);
+		if (!ret) {
+			lttng_ust_delete_fd_from_tracker(elf->fd);
+		} else {
+			PERROR("close");
+			abort();
+		}
+		lttng_ust_unlock_fd_tracker();
 	}
+
+	free(elf->ehdr);
 	free(elf->path);
 	free(elf);
 }