From 2f5feedf1d705b53e5bf90c8b5207dd91f4522f1 Mon Sep 17 00:00:00 2001 From: Elliott Hughes Date: Tue, 28 Apr 2015 17:24:24 -0700 Subject: Check all lseek calls succeed. Also add missing TEMP_FAILURE_RETRYs on read, write, and lseek. Bug: http://b/20625546 Change-Id: I03b198e11c1921b35518ee2dd005a7cfcf4fd94b (cherry picked from commit 7bad7c4646ee8fd8d6e6ed0ffd3ddbb0c1b41a2f) --- minzip/SysUtil.c | 10 ++++++---- minzip/Zip.c | 6 ++---- 2 files changed, 8 insertions(+), 8 deletions(-) (limited to 'minzip') diff --git a/minzip/SysUtil.c b/minzip/SysUtil.c index ac6f5c3..b160c9e 100644 --- a/minzip/SysUtil.c +++ b/minzip/SysUtil.c @@ -27,11 +27,13 @@ static int getFileStartAndLength(int fd, off_t *start_, size_t *length_) assert(start_ != NULL); assert(length_ != NULL); - start = lseek(fd, 0L, SEEK_CUR); - end = lseek(fd, 0L, SEEK_END); - (void) lseek(fd, start, SEEK_SET); + // TODO: isn't start always 0 for the single call site? just use fstat instead? - if (start == (off_t) -1 || end == (off_t) -1) { + start = TEMP_FAILURE_RETRY(lseek(fd, 0L, SEEK_CUR)); + end = TEMP_FAILURE_RETRY(lseek(fd, 0L, SEEK_END)); + + if (TEMP_FAILURE_RETRY(lseek(fd, start, SEEK_SET)) == -1 || + start == (off_t) -1 || end == (off_t) -1) { LOGE("could not determine length of file\n"); return -1; } diff --git a/minzip/Zip.c b/minzip/Zip.c index d3ff79b..40712e0 100644 --- a/minzip/Zip.c +++ b/minzip/Zip.c @@ -675,13 +675,11 @@ static bool writeProcessFunction(const unsigned char *data, int dataLen, } ssize_t soFar = 0; while (true) { - ssize_t n = write(fd, data+soFar, dataLen-soFar); + ssize_t n = TEMP_FAILURE_RETRY(write(fd, data+soFar, dataLen-soFar)); if (n <= 0) { LOGE("Error writing %zd bytes from zip file from %p: %s\n", dataLen-soFar, data+soFar, strerror(errno)); - if (errno != EINTR) { - return false; - } + return false; } else if (n > 0) { soFar += n; if (soFar == dataLen) return true; -- cgit v1.1