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authorElliott Hughes <enh@google.com>2015-04-29 02:24:24 +0200
committerElliott Hughes <enh@google.com>2015-04-30 06:14:56 +0200
commit2f5feedf1d705b53e5bf90c8b5207dd91f4522f1 (patch)
treee2c357667b0e76e6fa5a43c7a7951c872c373e9c /updater/blockimg.c
parentStop using adb_strtok, and check argument validity. (diff)
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Diffstat (limited to '')
-rw-r--r--updater/blockimg.c48
1 files changed, 20 insertions, 28 deletions
diff --git a/updater/blockimg.c b/updater/blockimg.c
index d5344f991..532e7b845 100644
--- a/updater/blockimg.c
+++ b/updater/blockimg.c
@@ -113,13 +113,12 @@ static int range_overlaps(RangeSet* r1, RangeSet* r2) {
static int read_all(int fd, uint8_t* data, size_t size) {
size_t so_far = 0;
while (so_far < size) {
- ssize_t r = read(fd, data+so_far, size-so_far);
- if (r < 0 && errno != EINTR) {
+ ssize_t r = TEMP_FAILURE_RETRY(read(fd, data+so_far, size-so_far));
+ if (r == -1) {
fprintf(stderr, "read failed: %s\n", strerror(errno));
return -1;
- } else {
- so_far += r;
}
+ so_far += r;
}
return 0;
}
@@ -127,13 +126,12 @@ static int read_all(int fd, uint8_t* data, size_t size) {
static int write_all(int fd, const uint8_t* data, size_t size) {
size_t written = 0;
while (written < size) {
- ssize_t w = write(fd, data+written, size-written);
- if (w < 0 && errno != EINTR) {
+ ssize_t w = TEMP_FAILURE_RETRY(write(fd, data+written, size-written));
+ if (w == -1) {
fprintf(stderr, "write failed: %s\n", strerror(errno));
return -1;
- } else {
- written += w;
}
+ written += w;
}
if (fsync(fd) == -1) {
@@ -144,19 +142,13 @@ static int write_all(int fd, const uint8_t* data, size_t size) {
return 0;
}
-static int check_lseek(int fd, off64_t offset, int whence) {
- while (true) {
- off64_t ret = lseek64(fd, offset, whence);
- if (ret < 0) {
- if (errno != EINTR) {
- fprintf(stderr, "lseek64 failed: %s\n", strerror(errno));
- return -1;
- }
- } else {
- break;
- }
+static bool check_lseek(int fd, off64_t offset, int whence) {
+ off64_t rc = TEMP_FAILURE_RETRY(lseek64(fd, offset, whence));
+ if (rc == -1) {
+ fprintf(stderr, "lseek64 failed: %s\n", strerror(errno));
+ return false;
}
- return 0;
+ return true;
}
static void allocate(size_t size, uint8_t** buffer, size_t* buffer_alloc) {
@@ -213,8 +205,8 @@ static ssize_t RangeSinkWrite(const uint8_t* data, ssize_t size, void* token) {
rss->p_remain = (rss->tgt->pos[rss->p_block * 2 + 1] -
rss->tgt->pos[rss->p_block * 2]) * BLOCKSIZE;
- if (check_lseek(rss->fd, (off64_t)rss->tgt->pos[rss->p_block*2] * BLOCKSIZE,
- SEEK_SET) == -1) {
+ if (!check_lseek(rss->fd, (off64_t)rss->tgt->pos[rss->p_block*2] * BLOCKSIZE,
+ SEEK_SET)) {
break;
}
} else {
@@ -306,7 +298,7 @@ static int ReadBlocks(RangeSet* src, uint8_t* buffer, int fd) {
}
for (i = 0; i < src->count; ++i) {
- if (check_lseek(fd, (off64_t) src->pos[i * 2] * BLOCKSIZE, SEEK_SET) == -1) {
+ if (!check_lseek(fd, (off64_t) src->pos[i * 2] * BLOCKSIZE, SEEK_SET)) {
return -1;
}
@@ -332,7 +324,7 @@ static int WriteBlocks(RangeSet* tgt, uint8_t* buffer, int fd) {
}
for (i = 0; i < tgt->count; ++i) {
- if (check_lseek(fd, (off64_t) tgt->pos[i * 2] * BLOCKSIZE, SEEK_SET) == -1) {
+ if (!check_lseek(fd, (off64_t) tgt->pos[i * 2] * BLOCKSIZE, SEEK_SET)) {
return -1;
}
@@ -1217,7 +1209,7 @@ static int PerformCommandZero(CommandParameters* params) {
if (params->canwrite) {
for (i = 0; i < tgt->count; ++i) {
- if (check_lseek(params->fd, (off64_t) tgt->pos[i * 2] * BLOCKSIZE, SEEK_SET) == -1) {
+ if (!check_lseek(params->fd, (off64_t) tgt->pos[i * 2] * BLOCKSIZE, SEEK_SET)) {
goto pczout;
}
@@ -1271,7 +1263,7 @@ static int PerformCommandNew(CommandParameters* params) {
rss.p_block = 0;
rss.p_remain = (tgt->pos[1] - tgt->pos[0]) * BLOCKSIZE;
- if (check_lseek(params->fd, (off64_t) tgt->pos[0] * BLOCKSIZE, SEEK_SET) == -1) {
+ if (!check_lseek(params->fd, (off64_t) tgt->pos[0] * BLOCKSIZE, SEEK_SET)) {
goto pcnout;
}
@@ -1367,7 +1359,7 @@ static int PerformCommandDiff(CommandParameters* params) {
rss.p_block = 0;
rss.p_remain = (tgt->pos[1] - tgt->pos[0]) * BLOCKSIZE;
- if (check_lseek(params->fd, (off64_t) tgt->pos[0] * BLOCKSIZE, SEEK_SET) == -1) {
+ if (!check_lseek(params->fd, (off64_t) tgt->pos[0] * BLOCKSIZE, SEEK_SET)) {
goto pcdout;
}
@@ -1906,7 +1898,7 @@ Value* RangeSha1Fn(const char* name, State* state, int argc, Expr* argv[]) {
int i, j;
for (i = 0; i < rs->count; ++i) {
- if (check_lseek(fd, (off64_t)rs->pos[i*2] * BLOCKSIZE, SEEK_SET) == -1) {
+ if (!check_lseek(fd, (off64_t)rs->pos[i*2] * BLOCKSIZE, SEEK_SET)) {
ErrorAbort(state, "failed to seek %s: %s", blockdev_filename->data,
strerror(errno));
goto done;