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-rw-r--r--build/common.gypi3
-rw-r--r--chrome/common/extensions/extension.h2
-rw-r--r--gfx/codec/png_codec.cc100
-rw-r--r--sandbox/linux/seccomp/library.cc2
-rw-r--r--sandbox/linux/seccomp/library.h2
-rw-r--r--sandbox/linux/seccomp/sandbox_impl.h2
-rw-r--r--sandbox/linux/seccomp/socketcall.cc8
-rw-r--r--sandbox/linux/suid/linux_util.c5
-rw-r--r--sandbox/linux/suid/process_util_linux.c2
-rw-r--r--sandbox/linux/suid/sandbox.c23
10 files changed, 76 insertions, 73 deletions
diff --git a/build/common.gypi b/build/common.gypi
index 6442f40..a4328bb 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -704,8 +704,7 @@
'-pthread',
'-fno-exceptions',
'-Wall',
- # TODO(evan): turn this back on once the v8 change lands.
- #'-Wextra',
+ '-Wextra',
# Don't warn about unused function params. We use those everywhere.
'-Wno-unused-parameter',
# Don't warn about the "struct foo f = {0};" initialization pattern.
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index 05c1522..0129858 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -304,7 +304,7 @@ class Extension {
const std::string& launch_local_path() const { return launch_local_path_; }
const std::string& launch_web_url() const { return launch_web_url_; }
- const LaunchContainer launch_container() const { return launch_container_; }
+ LaunchContainer launch_container() const { return launch_container_; }
// Gets the fully resolved absolute launch URL.
GURL GetFullLaunchURL() const;
diff --git a/gfx/codec/png_codec.cc b/gfx/codec/png_codec.cc
index eaf94f0..9db0095 100644
--- a/gfx/codec/png_codec.cc
+++ b/gfx/codec/png_codec.cc
@@ -541,21 +541,53 @@ void ConvertBGRAtoRGB(const unsigned char* bgra, int pixel_width,
}
}
-// Automatically destroys the given write structs on destruction to make
-// cleanup and error handling code cleaner.
-class PngWriteStructDestroyer {
- public:
- PngWriteStructDestroyer(png_struct** ps, png_info** pi) : ps_(ps), pi_(pi) {
- }
- ~PngWriteStructDestroyer() {
- png_destroy_write_struct(ps_, pi_);
+// The type of functions usable for converting between pixel formats.
+typedef void (*FormatConverter)(const unsigned char* in, int w,
+ unsigned char* out, bool* is_opaque);
+
+// libpng uses a wacky setjmp-based API, which makes the compiler nervous.
+// We constrain all of the calls we make to libpng where the setjmp() is in
+// place to this function.
+// Returns true on success.
+bool DoLibpngWrite(png_struct* png_ptr, png_info* info_ptr,
+ PngEncoderState* state,
+ int width, int height, int row_byte_width,
+ const unsigned char* input,
+ int png_output_color_type, int output_color_components,
+ FormatConverter converter) {
+ // Make sure to not declare any locals here -- locals in the presence
+ // of setjmp() in C++ code makes gcc complain.
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ return false;
+
+ // Set our callback for libpng to give us the data.
+ png_set_write_fn(png_ptr, state, EncoderWriteCallback, NULL);
+
+ png_set_IHDR(png_ptr, info_ptr, width, height, 8, png_output_color_type,
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT);
+ png_write_info(png_ptr, info_ptr);
+
+ if (!converter) {
+ // No conversion needed, give the data directly to libpng.
+ for (int y = 0; y < height; y ++) {
+ png_write_row(png_ptr,
+ const_cast<unsigned char*>(&input[y * row_byte_width]));
+ }
+ } else {
+ // Needs conversion using a separate buffer.
+ unsigned char* row = new unsigned char[width * output_color_components];
+ for (int y = 0; y < height; y ++) {
+ converter(&input[y * row_byte_width], width, row, NULL);
+ png_write_row(png_ptr, row);
+ }
+ delete[] row;
}
- private:
- png_struct** ps_;
- png_info** pi_;
- DISALLOW_EVIL_CONSTRUCTORS(PngWriteStructDestroyer);
-};
+ png_write_end(png_ptr, info_ptr);
+ return true;
+}
} // namespace
@@ -566,8 +598,7 @@ bool PNGCodec::Encode(const unsigned char* input, ColorFormat format,
std::vector<unsigned char>* output) {
// Run to convert an input row into the output row format, NULL means no
// conversion is necessary.
- void (*converter)(const unsigned char* in, int w, unsigned char* out,
- bool* is_opaque) = NULL;
+ FormatConverter converter = NULL;
int input_color_components, output_color_components;
int png_output_color_type;
@@ -635,42 +666,15 @@ bool PNGCodec::Encode(const unsigned char* input, ColorFormat format,
png_destroy_write_struct(&png_ptr, NULL);
return false;
}
- PngWriteStructDestroyer destroyer(&png_ptr, &info_ptr);
-
- if (setjmp(png_jmpbuf(png_ptr))) {
- // The destroyer will ensure that the structures are cleaned up in this
- // case, even though we may get here as a jump from random parts of the
- // PNG library called below.
- return false;
- }
- // Set our callback for libpng to give us the data.
PngEncoderState state(output);
- png_set_write_fn(png_ptr, &state, EncoderWriteCallback, NULL);
+ bool success = DoLibpngWrite(png_ptr, info_ptr, &state,
+ w, h, row_byte_width, input,
+ png_output_color_type, output_color_components,
+ converter);
+ png_destroy_write_struct(&png_ptr, &info_ptr);
- png_set_IHDR(png_ptr, info_ptr, w, h, 8, png_output_color_type,
- PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
- PNG_FILTER_TYPE_DEFAULT);
- png_write_info(png_ptr, info_ptr);
-
- if (!converter) {
- // No conversion needed, give the data directly to libpng.
- for (int y = 0; y < h; y ++) {
- png_write_row(png_ptr,
- const_cast<unsigned char*>(&input[y * row_byte_width]));
- }
- } else {
- // Needs conversion using a separate buffer.
- unsigned char* row = new unsigned char[w * output_color_components];
- for (int y = 0; y < h; y ++) {
- converter(&input[y * row_byte_width], w, row, NULL);
- png_write_row(png_ptr, row);
- }
- delete[] row;
- }
-
- png_write_end(png_ptr, info_ptr);
- return true;
+ return success;
}
// static
diff --git a/sandbox/linux/seccomp/library.cc b/sandbox/linux/seccomp/library.cc
index 1b06bc1..768b00a 100644
--- a/sandbox/linux/seccomp/library.cc
+++ b/sandbox/linux/seccomp/library.cc
@@ -318,7 +318,7 @@ const Elf_Shdr* Library::getSection(const string& section) {
return &iter->second.second;
}
-const int Library::getSectionIndex(const string& section) {
+int Library::getSectionIndex(const string& section) {
if (!valid_) {
return -1;
}
diff --git a/sandbox/linux/seccomp/library.h b/sandbox/linux/seccomp/library.h
index 96ec581..e27bfde 100644
--- a/sandbox/linux/seccomp/library.h
+++ b/sandbox/linux/seccomp/library.h
@@ -126,7 +126,7 @@ class Library {
bool parseElf();
const Elf_Ehdr* getEhdr();
const Elf_Shdr* getSection(const string& section);
- const int getSectionIndex(const string& section);
+ int getSectionIndex(const string& section);
void makeWritable(bool state) const;
void patchSystemCalls();
bool isVDSO() const { return isVDSO_; }
diff --git a/sandbox/linux/seccomp/sandbox_impl.h b/sandbox/linux/seccomp/sandbox_impl.h
index 0a98283..18a359c 100644
--- a/sandbox/linux/seccomp/sandbox_impl.h
+++ b/sandbox/linux/seccomp/sandbox_impl.h
@@ -268,7 +268,7 @@ class Sandbox {
// Wrapper around "read()" that can deal with partial and interrupted reads
// and that does not modify the global errno variable.
static ssize_t read(SysCalls& sys, int fd, void* buf, size_t len) {
- if (len < 0) {
+ if (static_cast<ssize_t>(len) < 0) {
sys.my_errno = EINVAL;
return -1;
}
diff --git a/sandbox/linux/seccomp/socketcall.cc b/sandbox/linux/seccomp/socketcall.cc
index 43116bb..497e5e2 100644
--- a/sandbox/linux/seccomp/socketcall.cc
+++ b/sandbox/linux/seccomp/socketcall.cc
@@ -288,8 +288,7 @@ bool Sandbox::process_sendmsg(int parentMapsFd, int sandboxFd, int threadFdPub,
die("Failed to read parameters for sendmsg() [process]");
}
- if (data.msg.msg_namelen < 0 || data.msg.msg_namelen > 4096 ||
- data.msg.msg_controllen < 0 || data.msg.msg_controllen > 4096) {
+ if (data.msg.msg_namelen > 4096 || data.msg.msg_controllen > 4096) {
die("Unexpected size for socketcall() payload [process]");
}
char extra[data.msg.msg_namelen + data.msg.msg_controllen];
@@ -767,7 +766,7 @@ bool Sandbox::process_socketcall(int parentMapsFd, int sandboxFd,
// Verify that the length for the payload is reasonable. We don't want to
// blow up our stack, and excessive (or negative) buffer sizes are almost
// certainly a bug.
- if (numExtraData < 0 || numExtraData > 4096) {
+ if (numExtraData > 4096) {
die("Unexpected size for socketcall() payload [process]");
}
@@ -783,8 +782,7 @@ bool Sandbox::process_socketcall(int parentMapsFd, int sandboxFd,
ssize_t numSendmsgExtra = 0;
if (socketcall_req.call == SYS_SENDMSG) {
struct msghdr* msg = reinterpret_cast<struct msghdr*>(extra);
- if (msg->msg_namelen < 0 || msg->msg_namelen > 4096 ||
- msg->msg_controllen < 0 || msg->msg_controllen > 4096) {
+ if (msg->msg_namelen > 4096 || msg->msg_controllen > 4096) {
die("Unexpected size for socketcall() payload [process]");
}
numSendmsgExtra = msg->msg_namelen + msg->msg_controllen;
diff --git a/sandbox/linux/suid/linux_util.c b/sandbox/linux/suid/linux_util.c
index ded545b..c5af0d0 100644
--- a/sandbox/linux/suid/linux_util.c
+++ b/sandbox/linux/suid/linux_util.c
@@ -83,8 +83,9 @@ bool FindProcessHoldingSocket(pid_t* pid_out, ino_t socket_inode) {
continue;
while ((dent = readdir(fd))) {
- if (snprintf(buf, sizeof(buf), "/proc/%lu/fd/%s", pid_ul,
- dent->d_name) >= sizeof(buf) - 1) {
+ int printed = snprintf(buf, sizeof(buf), "/proc/%lu/fd/%s", pid_ul,
+ dent->d_name);
+ if (printed < 0 || printed >= (int)(sizeof(buf) - 1)) {
continue;
}
diff --git a/sandbox/linux/suid/process_util_linux.c b/sandbox/linux/suid/process_util_linux.c
index 9f40f39..7b31274 100644
--- a/sandbox/linux/suid/process_util_linux.c
+++ b/sandbox/linux/suid/process_util_linux.c
@@ -38,7 +38,7 @@ bool AdjustOOMScore(pid_t process, int score) {
char buf[3]; // 0 <= |score| <= 15;
snprintf(buf, sizeof(buf), "%d", score);
- size_t len = strlen(buf);
+ ssize_t len = strlen(buf);
ssize_t bytes_written = write(fd, buf, len);
close(fd);
diff --git a/sandbox/linux/suid/sandbox.c b/sandbox/linux/suid/sandbox.c
index e4968c9..7389f03 100644
--- a/sandbox/linux/suid/sandbox.c
+++ b/sandbox/linux/suid/sandbox.c
@@ -90,13 +90,13 @@ static int CloneChrootHelperProcess() {
char tempDirectoryTemplate[80] = "/tmp/chrome-sandbox-chroot-XXXXXX";
struct statfs sfs;
if (!statfs("/tmp", &sfs) &&
- sfs.f_type != BTRFS_SUPER_MAGIC &&
- sfs.f_type != EXT2_SUPER_MAGIC &&
- sfs.f_type != EXT3_SUPER_MAGIC &&
- sfs.f_type != EXT4_SUPER_MAGIC &&
- sfs.f_type != REISERFS_SUPER_MAGIC &&
- sfs.f_type != TMPFS_MAGIC &&
- sfs.f_type != XFS_SUPER_MAGIC) {
+ (unsigned long)sfs.f_type != BTRFS_SUPER_MAGIC &&
+ (unsigned long)sfs.f_type != EXT2_SUPER_MAGIC &&
+ (unsigned long)sfs.f_type != EXT3_SUPER_MAGIC &&
+ (unsigned long)sfs.f_type != EXT4_SUPER_MAGIC &&
+ (unsigned long)sfs.f_type != REISERFS_SUPER_MAGIC &&
+ (unsigned long)sfs.f_type != TMPFS_MAGIC &&
+ (unsigned long)sfs.f_type != XFS_SUPER_MAGIC) {
// If /dev/shm exists, it is supposed to be a tmpfs filesystem. While we
// are not actually using it for shared memory, moving our temp directory
// into a known tmpfs filesystem is preferable over using a potentially
@@ -137,7 +137,7 @@ static int CloneChrootHelperProcess() {
char proc_self_fd_str[128];
int printed = snprintf(proc_self_fd_str, sizeof(proc_self_fd_str),
"/proc/self/fd/%d", chroot_dir_fd);
- if (printed < 0 || printed >= sizeof(proc_self_fd_str)) {
+ if (printed < 0 || printed >= (int)sizeof(proc_self_fd_str)) {
fprintf(stderr, "Error in snprintf");
return -1;
}
@@ -246,7 +246,7 @@ static bool SpawnChrootHelper() {
// number of the file descriptor.
char desc_str[64];
int printed = snprintf(desc_str, sizeof(desc_str), "%d", chroot_signal_fd);
- if (printed < 0 || printed >= sizeof(desc_str)) {
+ if (printed < 0 || printed >= (int)sizeof(desc_str)) {
fprintf(stderr, "Failed to snprintf\n");
return false;
}
@@ -379,9 +379,10 @@ int main(int argc, char **argv) {
if (argc == 4 && (0 == strcmp(argv[1], kAdjustOOMScoreSwitch))) {
char* endptr;
long score;
- pid_t pid = strtoul(argv[2], &endptr, 10);
- if (pid == ULONG_MAX || *endptr)
+ unsigned long pid_ul = strtoul(argv[2], &endptr, 10);
+ if (pid_ul == ULONG_MAX || *endptr)
return 1;
+ pid_t pid = pid_ul;
score = strtol(argv[3], &endptr, 10);
if (score == LONG_MAX || score == LONG_MIN || *endptr)
return 1;
generated by cgit v1.1 at 2024-09-13 04:44:07 +0000