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syscall-dump: add socket/dup/dup2 wrapper

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This commit is contained in:
Jaroslav Kysela 2015-04-03 14:28:10 +02:00
parent 4849c2cfd9
commit 86d10bd82b
1 changed files with 38 additions and 1 deletions
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39
tools/syscall-dump.c
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@ -35,12 +35,15 @@ Usage:
static int dlog_fd = -1; static int dlog_fd = -1;
static int (*real_open)(const char *pathname, int flags, ...); static int (*real_open)(const char *pathname, int flags, ...);
static int (*real_open64)(const char *pathname, int flags, ...); static int (*real_open64)(const char *pathname, int flags, ...);
static int (*real_socket)(int domain, int type, int protocol);
static int (*real_ioctl)(int fd, unsigned long request, ...); static int (*real_ioctl)(int fd, unsigned long request, ...);
static ssize_t (*real_write)(int fd, const void *buf, size_t len); static ssize_t (*real_write)(int fd, const void *buf, size_t len);
static ssize_t (*real_read)(int fd, void *buf, size_t len); static ssize_t (*real_read)(int fd, void *buf, size_t len);
static off_t (*real_lseek)(int fd, off_t offset, int whence); static off_t (*real_lseek)(int fd, off_t offset, int whence);
static off64_t (*real_lseek64)(int fd, off64_t offset, int whence); static off64_t (*real_lseek64)(int fd, off64_t offset, int whence);
static int (*real_close)(int fd); static int (*real_close)(int fd);
static int (*real_dup)(int oldfd);
static int (*real_dup2)(int oldfd, int newfd);
#define REDIR(realptr, symname) do { \ #define REDIR(realptr, symname) do { \
if ((realptr) == NULL) { \ if ((realptr) == NULL) { \
@ -148,6 +151,18 @@ int open64(const char *pathname, int flags, ...)
return r; return r;
} }
/* socket() wrapper */
int socket(int domain, int type, int protocol)
{
int r;
REDIR(real_socket, "socket");
r = real_socket(domain, type, protocol);
dlog("socket(%d, %d, %d) = %d (%d)\n", domain, type, protocol, r, E(r));
return r;
}
/* close() wrapper */ /* close() wrapper */
int close(int fd) int close(int fd)
{ {
@ -203,7 +218,6 @@ off_t lseek(int fd, off_t offset, int whence)
return r; return r;
} }
/* lseek64() wrapper */ /* lseek64() wrapper */
off64_t lseek64(int fd, off64_t offset, int whence) off64_t lseek64(int fd, off64_t offset, int whence)
{ {
@ -216,6 +230,29 @@ off64_t lseek64(int fd, off64_t offset, int whence)
return r; return r;
} }
/* dup() wrapper */
int dup(int oldfd)
{
int r;
REDIR(real_dup, "dup");
r = real_dup(oldfd);
dlog("dup(%d) = %d (%d)\n", oldfd, r, E(r));
return r;
}
/* dup2() wrapper */
int dup2(int oldfd, int newfd)
{
int r;
REDIR(real_dup2, "dup2");
r = real_dup2(oldfd, newfd);
dlog("dup2(%d, %d) = %d (%d)\n", oldfd, newfd, r, E(r));
return r;
}
/* ioctl() wrapper */ /* ioctl() wrapper */
int ioctl(int fd, unsigned long request, ...) int ioctl(int fd, unsigned long request, ...)