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feat: Add support for FIFOs

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apio 2023-01-27 23:00:53 +01:00
parent 3772e9e3a6
commit 1f08cf4b31
Signed by: apio
GPG Key ID: B8A7D06E42258954
4 changed files with 16 additions and 1 deletions
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2
docs/API.md
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@ -79,6 +79,8 @@ This enum lists all supported file types:
`MTAR_HARDLINK`: Hard links `MTAR_HARDLINK`: Hard links
`MTAR_FIFO`: FIFO special files
Other file types supported in tar archives, such as block/character devices or FIFOs, are not supported and minitar will throw an error when encountering one of them. This behavior can be controlled by passing `-DMINITAR_IGNORE_UNSUPPORTED_TYPES=ON` to CMake when configuring, which will make minitar silently ignore such entries instead of panicking. Other file types supported in tar archives, such as block/character devices or FIFOs, are not supported and minitar will throw an error when encountering one of them. This behavior can be controlled by passing `-DMINITAR_IGNORE_UNSUPPORTED_TYPES=ON` to CMake when configuring, which will make minitar silently ignore such entries instead of panicking.
### minitar_entry_metadata ### minitar_entry_metadata

12
examples/untar.c
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@ -110,6 +110,18 @@ int main(int argc, char** argv)
printf("link %s -> %s\n", entry.metadata.path, entry.metadata.link); printf("link %s -> %s\n", entry.metadata.path, entry.metadata.link);
} }
else if (entry.metadata.type == MTAR_FIFO)
{
int status = mknod(entry.metadata.path, entry.metadata.mode | S_IFIFO, 0);
if (status != 0)
{
fprintf(stderr, "Failed to create FIFO %s: %s\n", entry.metadata.path, strerror(errno));
break;
}
printf("fifo %s\n", entry.metadata.path);
}
} }
else else
break; break;

1
minitar.h
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@ -23,6 +23,7 @@ enum minitar_file_type
MTAR_DIRECTORY, MTAR_DIRECTORY,
MTAR_SYMLINK, MTAR_SYMLINK,
MTAR_HARDLINK, MTAR_HARDLINK,
MTAR_FIFO,
}; };
struct minitar_entry_internal struct minitar_entry_internal

2
src/util.c
View File

@ -193,7 +193,7 @@ void minitar_parse_metadata_from_tar_header(const struct tar_header* hdr, struct
case '3': minitar_handle_panic("Character devices are unsupported"); case '3': minitar_handle_panic("Character devices are unsupported");
case '4': minitar_handle_panic("Block devices are unsupported"); case '4': minitar_handle_panic("Block devices are unsupported");
case '5': metadata->type = MTAR_DIRECTORY; break; case '5': metadata->type = MTAR_DIRECTORY; break;
case '6': minitar_handle_panic("FIFOs are unsupported"); case '6': metadata->type = MTAR_FIFO; break;
// This case should have been previously handled by minitar_validate_header(). // This case should have been previously handled by minitar_validate_header().
default: minitar_handle_panic("Unknown entry type in tar header"); default: minitar_handle_panic("Unknown entry type in tar header");
} }