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55f7a571f2
Test checks that if the /proc/sys/net/unix/max_dgram_qlen value has been changed in process net namespace, then it is saved after c/r. Signed-off-by: Alexander Mikhalitsyn <alexander@mihalicyn.com> Signed-off-by: Alexander Mikhalitsyn <alexander.mikhalitsyn@virtuozzo.com>
59 lines
853 B
C
59 lines
853 B
C
#include <fcntl.h>
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#include "zdtmtst.h"
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#include "sysctl.h"
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int sysctl_read_int(const char *name, int *data)
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{
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int fd;
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int ret;
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char buf[16];
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fd = open(name, O_RDONLY);
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if (fd < 0) {
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pr_perror("Can't open %s", name);
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return fd;
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}
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ret = read(fd, buf, sizeof(buf) - 1);
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if (ret < 0) {
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pr_perror("Can't read %s", name);
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ret = -errno;
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goto err;
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}
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buf[ret] = '\0';
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*data = (int)strtoul(buf, NULL, 10);
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ret = 0;
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err:
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close(fd);
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return ret;
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}
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int sysctl_write_int(const char *name, int val)
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{
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int fd;
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int ret;
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char buf[16];
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fd = open(name, O_WRONLY);
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if (fd < 0) {
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pr_perror("Can't open %s", name);
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return fd;
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}
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sprintf(buf, "%d\n", val);
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ret = write(fd, buf, strlen(buf));
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if (ret < 0) {
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pr_perror("Can't write %d into %s", val, name);
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ret = -errno;
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goto err;
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}
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ret = 0;
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err:
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close(fd);
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return ret;
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}
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