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Code Issues Releases Wiki Activity

util.c: introduce open_proc_rw()

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To be used by the next patch

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
This commit is contained in:
Kir Kolyshkin
2012-02-17 01:39:33 +04:00
committed by Cyrill Gorcunov
parent 389bd830f1
commit 03294077af
2 changed files with 9 additions and 3 deletions
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1
include/util.h
View File

@@ -206,6 +206,7 @@ extern void hex_dump(void *addr, unsigned long len);
int open_pid_proc(pid_t pid); int open_pid_proc(pid_t pid);
int open_proc(int pid_dir_fd, char *fmt, ...); int open_proc(int pid_dir_fd, char *fmt, ...);
int open_proc_rw(int pid_dir_fd, char *fmt, ...)
DIR *opendir_proc(int pid_dir_fd, char *fmt, ...); DIR *opendir_proc(int pid_dir_fd, char *fmt, ...);
FILE *fopen_proc(int pid_dir_fd, char *fmt, ...); FILE *fopen_proc(int pid_dir_fd, char *fmt, ...);

11
util.c
View File

@@ -217,7 +217,7 @@ int open_pid_proc(pid_t pid)
return fd; return fd;
} }
#define do_open_proc(pid_dir_fd, fmt) \ #define do_open_proc(pid_dir_fd, fmt, flags) \
({ \ ({ \
char fname[64]; \ char fname[64]; \
va_list args; \ va_list args; \
@@ -226,12 +226,17 @@ int open_pid_proc(pid_t pid)
vsnprintf(fname, sizeof(fname), fmt, args); \ vsnprintf(fname, sizeof(fname), fmt, args); \
va_end(args); \ va_end(args); \
\ \
openat(pid_dir_fd, fname, O_RDONLY); \ openat(pid_dir_fd, fname, flags); \
}) })
int open_proc(int pid_dir_fd, char *fmt, ...) int open_proc(int pid_dir_fd, char *fmt, ...)
{ {
return do_open_proc(pid_dir_fd, fmt); return do_open_proc(pid_dir_fd, fmt, O_RDONLY);
}
int open_proc_rw(int pid_dir_fd, char *fmt, ...)
{
return do_open_proc(pid_dir_fd, fmt, O_RDWR);
} }
DIR *opendir_proc(int pid_dir_fd, char *fmt, ...) DIR *opendir_proc(int pid_dir_fd, char *fmt, ...)