| Message ID | 20250226002707.358601-1-daeho43@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [f2fs-dev] f2fs-tools: add ftruncate command in f2fs_io | expand |
On 2/26/25 08:27, Daeho Jeong wrote: > From: Daeho Jeong <daehojeong@google.com> > > add ftruncate command to do file truncate. Need to update manual of f2fs_io as well? Thanks, > > Signed-off-by: Daeho Jeong <daehojeong@google.com> > --- > tools/f2fs_io/f2fs_io.c | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+) > > diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c > index fa01f8f..08056a9 100644 > --- a/tools/f2fs_io/f2fs_io.c > +++ b/tools/f2fs_io/f2fs_io.c > @@ -1887,6 +1887,31 @@ static void do_get_advise(int argc, char **argv, const struct cmd_desc *cmd) > printf("\n"); > } > > +#define ftruncate_desc "ftruncate a file" > +#define ftruncate_help \ > +"f2fs_io ftruncate [length] [file_path]\n\n" \ > +"Do ftruncate a file in file_path with the length\n" \ > + > +static void do_ftruncate(int argc, char **argv, const struct cmd_desc *cmd) > +{ > + int fd, ret; > + off_t length; > + > + if (argc != 3) { > + fputs("Excess arguments\n\n", stderr); > + fputs(cmd->cmd_help, stderr); > + exit(1); > + } > + > + length = atoll(argv[1]); > + fd = xopen(argv[2], O_WRONLY, 0); > + > + ret = ftruncate(fd, length); > + if (ret < 0) > + die_errno("ftruncate failed"); > + exit(0); > +} > + > #define CMD_HIDDEN 0x0001 > #define CMD(name) { #name, do_##name, name##_desc, name##_help, 0 } > #define _CMD(name) { #name, do_##name, NULL, NULL, CMD_HIDDEN } > @@ -1932,6 +1957,7 @@ const struct cmd_desc cmd_list[] = { > CMD(removexattr), > CMD(lseek), > CMD(get_advise), > + CMD(ftruncate), > { NULL, NULL, NULL, NULL, 0 } > }; >
diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c index fa01f8f..08056a9 100644 --- a/tools/f2fs_io/f2fs_io.c +++ b/tools/f2fs_io/f2fs_io.c @@ -1887,6 +1887,31 @@ static void do_get_advise(int argc, char **argv, const struct cmd_desc *cmd) printf("\n"); } +#define ftruncate_desc "ftruncate a file" +#define ftruncate_help \ +"f2fs_io ftruncate [length] [file_path]\n\n" \ +"Do ftruncate a file in file_path with the length\n" \ + +static void do_ftruncate(int argc, char **argv, const struct cmd_desc *cmd) +{ + int fd, ret; + off_t length; + + if (argc != 3) { + fputs("Excess arguments\n\n", stderr); + fputs(cmd->cmd_help, stderr); + exit(1); + } + + length = atoll(argv[1]); + fd = xopen(argv[2], O_WRONLY, 0); + + ret = ftruncate(fd, length); + if (ret < 0) + die_errno("ftruncate failed"); + exit(0); +} + #define CMD_HIDDEN 0x0001 #define CMD(name) { #name, do_##name, name##_desc, name##_help, 0 } #define _CMD(name) { #name, do_##name, NULL, NULL, CMD_HIDDEN } @@ -1932,6 +1957,7 @@ const struct cmd_desc cmd_list[] = { CMD(removexattr), CMD(lseek), CMD(get_advise), + CMD(ftruncate), { NULL, NULL, NULL, NULL, 0 } };