PWN-Hunter/android_external_toybox
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Some lib fixes: mark xvfork() noinline, make xsendfile() return bytes copied,

Browse Source 
make xsocket()'s returned fd CLOEXEC.
This commit is contained in:
Rob Landley 2017-01-04 01:32:44 -06:00
parent 4d4ca28aca
commit a1a559e25a
3 changed files with 11 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/lib.h
View File

@ -211,7 +211,7 @@ off_t fdlength(int fd);
void loopfiles_rw(char **argv, int flags, int permissions,
void (*function)(int fd, char *name));
void loopfiles(char **argv, void (*function)(int fd, char *name));
void xsendfile(int in, int out);
long long xsendfile(int in, int out);
int wfchmodat(int rc, char *name, mode_t mode);
int copy_tempfile(int fdin, char *name, char **tempname);
void delete_tempfile(int fdin, int fdout, char **tempname);

4
lib/net.c
View File

@ -5,6 +5,8 @@ int xsocket(int domain, int type, int protocol)
int fd = socket(domain, type, protocol);
if (fd < 0) perror_exit("socket %x %x", type, protocol);
fcntl(fd, F_SETFD, FD_CLOEXEC);
return fd;
}
@ -35,7 +37,7 @@ int xconnect(char *host, char *port, int family, int socktype, int protocol,
fd = (ai->ai_next ? socket : xsocket)(ai->ai_family, ai->ai_socktype,
ai->ai_protocol);
if (!connect(fd, ai->ai_addr, ai->ai_addrlen)) break;
else if (!ai2->ai_next) perror_exit("connect");
else if (!ai->ai_next) perror_exit("connect");
close(fd);
}
freeaddrinfo(ai2);

10
lib/xwrap.c
View File

@ -163,7 +163,7 @@ void xflush(void)
// share a stack, so child returning from a function would stomp the return
// address parent would need. Solution: make vfork() an argument so processes
// diverge before function gets called.
pid_t xvforkwrap(pid_t pid)
pid_t __attribute__((noinline)) xvforkwrap(pid_t pid)
{
if (pid == -1) perror_exit("vfork");
@ -732,16 +732,20 @@ void xpidfile(char *name)
// Copy the rest of in to out and close both files.
void xsendfile(int in, int out)
long long xsendfile(int in, int out)
{
long long total = 0;
long len;
if (in<0) return;
if (in<0) return 0;
for (;;) {
len = xread(in, libbuf, sizeof(libbuf));
if (len<1) break;
xwrite(out, libbuf, len);
total += len;
}
return total;
}
// parse fractional seconds with optional s/m/h/d suffix