diff options
Diffstat (limited to 'sys-utils/zramctl.c')
| -rw-r--r-- | sys-utils/zramctl.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/sys-utils/zramctl.c b/sys-utils/zramctl.c index 241e6fb0f..bdab4ad59 100644 --- a/sys-utils/zramctl.c +++ b/sys-utils/zramctl.c @@ -167,8 +167,11 @@ static inline int zram_exist(struct zram *z) { assert(z); - if (zram_get_sysfs(z) == NULL) + errno = 0; + if (zram_get_sysfs(z) == NULL) { + errno = ENODEV; return 0; + } DBG(fprintf(stderr, "%s exists", z->devname)); return 1; @@ -511,8 +514,11 @@ int main(int argc, char **argv) columns[ncolumns++] = COL_STREAMS; columns[ncolumns++] = COL_MOUNTPOINT; } - if (optind < argc) + if (optind < argc) { zram = new_zram(argv[optind++]); + if (!zram_exist(zram)) + err(EXIT_FAILURE, zram->devname); + } status(zram); free_zram(zram); break; @@ -521,7 +527,8 @@ int main(int argc, char **argv) errx(EXIT_FAILURE, _("no device specified")); while (optind < argc) { zram = new_zram(argv[optind]); - if (zram_set_u64parm(zram, "reset", 1)) { + if (!zram_exist(zram) + || zram_set_u64parm(zram, "reset", 1)) { warn(_("%s: failed to reset"), zram->devname); rc = 1; } @@ -543,8 +550,11 @@ int main(int argc, char **argv) errx(EXIT_FAILURE, _("no free zram device found")); } else if (optind == argc) errx(EXIT_FAILURE, _("no device specified")); - else + else { zram = new_zram(argv[optind]); + if (!zram_exist(zram)) + err(EXIT_FAILURE, zram->devname); + } if (zram_set_u64parm(zram, "reset", 1)) err(EXIT_FAILURE, _("%s: failed to reset"), zram->devname); |